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• WATO EX-55/65 Anesthesia Machine

  Service Manual

• I

  Intellectual Property Statement SHENZHEN MINDRAY BIO-MEDICAL
  ELECTRONICS CO., LTD. (hereinafter called Mindray) owns the
  intellectual property rights to this product and this manual. This
  manual may refer to information protected by copyrights or patents
  and does not convey any license under the patent rights of Mindray,
  nor the rights of others. Mindray does not assume any liability
  arising out of any infringements of patents or other rights of
  third parties. Mindray intends to maintain the contents of this
  manual as confidential information. Disclosure of the information
  in this manual in any manner whatsoever without the written
  permission of Mindray is strictly forbidden. Release, amendment,
  reproduction, distribution, rent, adaption and translation of this
  manual in any manner whatsoever without the written permission of
  Mindray is strictly forbidden.

  , and WATO are the registered trademarks or trademarks owned
  by

  Mindray in China and other countries. All other trademarks that
  appear in this manual are used only for editorial purposes without
  the intention of improperly using them. They are the property of
  their respective owners. Contents of this manual are subject to
  changes without prior notice.

  Revision History This manual has a revision number. This
  revision number changes whenever the manual is updated due to
  software or technical specification change. Contents of this manual
  are subject to change without prior notice. Revision 1.0 is the
  initial release of the document.

  Revision number: 1.1 Release time: 2009-03 Copyright 2008-2009
  Shenzhen Mindray Bio-Medical Electronics Co., Ltd. All rights
  reserved.

• II

  FOR YOUR NOTES

• III

  Preface

  Manual Purpose This manual provides detailed information about
  the assembling, dissembling, testing and troubleshooting of the
  equipment to support effective troubleshooting and repair. It is
  not intended to be a comprehensive, in-depth explanation of the
  product architecture or technical implementation. Observance of the
  manual is a prerequisite for proper equipment maintenance and
  prevents equipment damage and personal injury. This manual is based
  on the maximum configuration. Therefore, some contents may not
  apply to your monitor. If you have any question, please contact our
  Customer Service Department.

  Intended Audience This manual is geared for biomedical
  engineers, authorized technicians or service representatives
  responsible for troubleshooting, repairing and maintaining the
  anesthesia machines.

  Password A password is required to access different modes within
  the anesthesia machine.

  Factory maintenance: 0611

• IV

  FOR YOUR NOTES

• 1

  Contents

  1
  Safety…………………………………………………………………………………………………………………
  1-1 1.1 Safety Information
  …………………………………………………………………………………………….
  1-1

  1.1.1 Dangers
  ………………………………………………………………………………………………..
  1-2 1.1.2
  Warnings……………………………………………………………………………………………….
  1-2 1.1.3 Cautions
  ……………………………………………………………………………………………….
  1-2 1.1.4 Notes
  ……………………………………………………………………………………………………
  1-3

  1.2 Equipment Symbols
  …………………………………………………………………………………………..
  1-3

  2 Theory of Operation
  …………………………………………………………………………………………..
  2-1 2.1 Pressure Unit Conversion Table
  …………………………………………………………………………..
  2-1 2.2 Gas Flow
  ………………………………………………………………………………………………………….
  2-2

  2.2.1 Pneumatic Circuit
  Diagram……………………………………………………………………..
  2-2 2.2.2 Parts List
  ………………………………………………………………………………………………
  2-3 2.2.3 Key to Symbols
  ……………………………………………………………………………………..
  2-4 2.2.4 Description
  ……………………………………………………………………………………………
  2-4

  3 Checkout and Test
  ………………………………………………………………………………………………
  3-1 3.1 System Inspection
  ……………………………………………………………………………………………..
  3-1 3.2 Pipeline Tests
  ……………………………………………………………………………………………………
  3-2 3.3 Cylinder
  Tests……………………………………………………………………………………………………
  3-2

  3.3.1 Check the Cylinders are Full
  ……………………………………………………………………
  3-3 3.3.2 Cylinder High Pressure Leak
  Test…………………………………………………………….
  3-3

  3.4 Flow Control System Tests
  …………………………………………………………………………………
  3-3 3.4.1 Without O2 Sensor
  …………………………………………………………………………………
  3-3 3.4.2 With O2 Sensor
  ……………………………………………………………………………………..
  3-5

  3.5 Vaporizer Back Pressure Test
  ………………………………………………………………………………
  3-5 3.6 O2 Flush Test
  ……………………………………………………………………………………………………
  3-6

  3.6.1 In Mechanical Ventilation Mode
  ………………………………………………………………
  3-6 3.6.2 In Manual Ventilation Mode
  ……………………………………………………………………
  3-7

  3.7 Breathing Circuit
  Tests……………………………………………………………………………………….
  3-7 3.7.1 Bellows Test
  ………………………………………………………………………………………….
  3-8 3.7.2 Breathing System Leak Test in Mechanical Ventilation Mode
  …………………….. 3-8 3.7.3 Breathing System Leak Test in
  Manual Ventilation Mode…………………………. 3-12 3.7.4
  APL Valve Test
  …………………………………………………………………………………….
  3-13

  3.8 Pressure Relief Valve Test
  …………………………………………………………………………………
  3-14 3.9 Alarm
  Tests……………………………………………………………………………………………………..
  3-15

  3.9.1 Prepare for Alarm
  Tests…………………………………………………………………………
  3-15 3.9.2 Test the O2 Concentration Monitoring and Alarms
  …………………………………… 3-16 3.9.3 Test the Low
  Minute Volume (MV) Alarm
  ……………………………………………… 3-16

• 2

  3.9.4 Test the Apnea Alarm
  ……………………………………………………………………………
  3-17 3.9.5 Test the Sustained Airway Pressure
  Alarm………………………………………………. 3-17
  3.9.6 Test the High Paw
  Alarm……………………………………………………………………….
  3-17 3.9.7 Test the Low Paw Alarm
  ……………………………………………………………………….
  3-18

  3.10 AGSS Inspection
  ……………………………………………………………………………………………
  3-18 3.10.1 Check the Float
  ………………………………………………………………………………….
  3-18 3.10.2 Check the Transfer Tube and Active Scavenging
  Tube……………………………. 3-19

  3.11 Power Failure
  Test………………………………………………………………………………………….
  3-20 3.12 Electrical Safety Tests
  …………………………………………………………………………………….
  3-21

  4 Maintenance and Calibration
  ……………………………………………………………………………..
  4-1 4.1 Equipment
  Maintenance……………………………………………………………………………………..
  4-1

  4.1.1 One-year Replaceable Parts
  …………………………………………………………………….
  4-1 4.1.2 Three-year Replaceable
  Parts…………………………………………………………………..
  4-9

  4.2 System Test
  ………………………………………………………………………………………………………
  4-9 4.2.1 Check the Mechanical Ventilation Mode
  ………………………………………………… 4-10
  4.2.2 Breathing System Leak Test in Mechanical Ventilation Mode
  …………………… 4-13 4.2.3 Breathing System Leak Test in
  Manual Ventilation Mode…………………………. 4-13 4.2.4
  Check the Sensor Zero
  Point………………………………………………………………….
  4-13 4.2.5 Check the Flow Sensor
  Accuracy……………………………………………………………
  4-14 4.2.6 Check the Pressure Sensor Accuracy
  ………………………………………………………
  4-15 4.2.7 Check the Electronic Flowmeter Accuracy
  ……………………………………………… 4-16

  4.3 System
  Calibration…………………………………………………………………………………………..
  4-18 4.3.1 Flow Calibration (user)
  …………………………………………………………………………
  4-20 4.3.2 Flow Calibration
  (factory)……………………………………………………………………..
  4-21 4.3.3 Pressure Calibration (factory)
  ………………………………………………………………..
  4-27 4.3.4 Electronic Flowmeter Calibration (factory)
  …………………………………………….. 4-31 4.3.5
  Pressure and Flow Zeroing
  (factory)……………………………………………………….
  4-34 4.3.6 Electronic Flowmeter Zeroing
  (factory)…………………………………………………..
  4-35 4.3.7 O2 Sensor Calibration (optional)
  ……………………………………………………………
  4-36 4.3.8 CO2 Calibration (factory)
  ……………………………………………………………………..
  4-37 4.3.9 AG Calibration (factory)
  ……………………………………………………………………….
  4-39 4.3.10 O2 Module Calibration
  (factory)…………………………………………………………..
  4-41

  4.4 Software Upgrade and Software Configuration
  Activation……………………………………. 4-43 4.4.1
  Software
  Upgrade…………………………………………………………………………………
  4-43 4.4.2 Software Function
  Activation…………………………………………………………………
  4-50 4.4.3 Change the Software Configuration of Electronic
  Flowmeters…………………… 4-53 4.4.4 Load Gas Module or
  BIS Module
  …………………………………………………………..
  4-56 4.4.5 Load O2 Sensor Monitoring
  Function……………………………………………………..
  4-57 4.4.6 Select the Drive
  Gas……………………………………………………………………………..
  4-58

  4.5 Zero the Airway Pressure
  Gauge………………………………………………………………………..
  4-59 4.6 Adjust the APL Valve Accuracy
  …………………………………………………………………………
  4-60

  5
  Troubleshooting………………………………………………………………………………………………….
  5-1

• 3

  5.1
  Introduction………………………………………………………………………………………………………
  5-1 5.2 Technical Alarm Check
  ………………………………………………………………………………………
  5-1

  5.2.1 Ventilator Related Alarms
  ……………………………………………………………………….
  5-1 5.2.2 Electronic Flowmeter Related Alarms
  ………………………………………………………
  5-9

  5.3 Pneumatic Circuit System Problems
  ……………………………………………………………………5-11
  5.3.1 Tools for on-site
  Maintenance…………………………………………………………………5-11
  5.3.2 Gas Supplies and Drive
  Gas…………………………………………………………………..
  5-20 5.3.3 Anesthetic Gas Delivery System
  …………………………………………………………….
  5-28 5.3.4 Patient
  Circuit………………………………………………………………………………………
  5-42 5.3.5 Tidal Volume
  ……………………………………………………………………………………….
  5-57

  5.4 Troubleshoot Sensor and Valve Related Failures by Using the
  Valves-test Tool ………. 5-59 5.4.1 Preparations before Using
  the Valves-test
  Tool………………………………………… 5-59 5.4.2
  One-to-one Correspondence between the Sensors & Valves on the
  Valves-test Tool Screen and the
  Components……………………………………………………………………
  5-60 5.4.3 Description
  ………………………………………………………………………………………….
  5-61

  5.5 Hardware and Electrical
  Problems……………………………………………………………………..
  5-66

  6 Repair and Disassembly
  ……………………………………………………………………………………..
  6-1 6.1 Prepare for Disassembly
  …………………………………………………………………………………….
  6-2

  6.1.1
  Tools…………………………………………………………………………………………………….
  6-2 6.1.2
  Preparations…………………………………………………………………………………………..
  6-2 6.1.3 Bleed Gas
  Pressure…………………………………………………………………………………
  6-3

  6.2 Disassemble the Assemblies
  ……………………………………………………………………………….
  6-3 6.2.1 Remove the Top
  Panel…………………………………………………………………………….
  6-3 6.2.2 Remove the Rear Panel
  …………………………………………………………………………..
  6-4 6.2.3 Remove the Trolly Rear Panel
  Assembly…………………………………………………..
  6-5 6.2.4 Replace the System Switch
  ……………………………………………………………………..
  6-5 6.2.5 Remove the Left Front Panel
  Assembly…………………………………………………….
  6-7 6.2.6 Remove the Throttling Device
  …………………………………………………………………
  6-8 6.2.7 Disassemble the Display
  Assembly…………………………………………………………..
  6-9 6.2.8 Remove the Flowmeter Control Board
  …………………………………………………… 6-10
  6.2.9 Remove the Total Flowmeter
  …………………………………………………………………
  6-10 6.2.10 Disassemble the Gas Supply Inlet Assembly
  …………………………………………..6-11 6.2.11
  Remove the ACGO Switch
  Assembly……………………………………………………
  6-13 6.2.12 Remove the O2 Flush Button Assembly
  ……………………………………………….. 6-14
  6.2.13 Remove the Vaporizer Manifold
  Assembly……………………………………………. 6-15
  6.2.14 Disassemble the Pipeline Pressure Gauges
  ……………………………………………. 6-17 6.2.15
  Disassemble the Expiratory Valve Assembly
  …………………………………………. 6-18 6.2.16
  Remove the Three-way Valve
  ………………………………………………………………
  6-20 6.2.17 Remove the Auxiliary O2 Supply
  Assembly………………………………………….. 6-20
  6.2.18 Remove the AGSS
  Assembly……………………………………………………………….
  6-21 6.2.19 Remove the Main Control Board
  ………………………………………………………….
  6-23 6.2.20 Remove the Button Board
  ……………………………………………………………………
  6-23 6.2.21 Remove the Monitor
  Board………………………………………………………………….
  6-24

• 4

  6.2.22 Remove the
  Speaker……………………………………………………………………………
  6-25 6.2.23 Remove the Power
  Box……………………………………………………………………….
  6-25 6.2.24 Replace the Power Board
  …………………………………………………………………….
  6-27 6.2.25 Replace the Fuse
  ………………………………………………………………………………..
  6-28 6.2.26 Replace the Built-in
  Battery…………………………………………………………………
  6-29 6.2.27 Remove the Power Cord
  ……………………………………………………………………..
  6-30 6.2.28 Remove the Isolation Transformer
  ………………………………………………………..
  6-30 6.2.29 Replace the
  Caster………………………………………………………………………………
  6-32 6.2.30 Replace the Drawer
  …………………………………………………………………………….
  6-33

  6.3 Disassemble the Breathing System
  …………………………………………………………………….
  6-34 6.3.1 Remove the O2
  Sensor………………………………………………………………………….
  6-34 6.3.2 Remove the Breathing Tubes
  …………………………………………………………………
  6-35 6.3.3 Remove the Flow Sensor
  ………………………………………………………………………
  6-36 6.3.4 Remove the Manual
  Bag……………………………………………………………………….
  6-37 6.3.5 Disassemble the Bellows Assembly
  ………………………………………………………..
  6-38 6.3.6 Disassemble the PoP-Off Valve
  Assembly……………………………………………….
  6-39 6.3.7 Disassemble the Expiratory Check Valve
  Assembly…………………………………. 6-40 6.3.8
  Disassemble the Inspiratory Check Valve Assembly
  ………………………………… 6-40 6.3.9 Remove the
  Sodalime Canister
  ………………………………………………………………
  6-41 6.3.10 Remove the Water Collection Cup
  ………………………………………………………..
  6-42 6.3.11 Remove the Airway Pressure Gauge
  …………………………………………………….. 6-43
  6.3.12 Remove the Bag Arm
  ………………………………………………………………………….
  6-43 6.3.13 Remove the Circuit
  …………………………………………………………………………….
  6-44 6.3.14 Remove the Sodalime Canister Connection Block
  Assembly…………………… 6-45 6.3.15 Remove the Upper Cover
  2 and Lower Cover 2 Assemblies ……………………. 6-47
  6.3.16 Remove the Upper Cover Assembly
  …………………………………………………….. 6-49
  6.3.17 Remove the Median Plate
  Assembly……………………………………………………..
  6-49 6.3.18 Remove the Lower Cover
  Assembly……………………………………………………..
  6-50 6.3.19 Disassemble the Bag/mechanical Ventilation Switch
  Assembly……………….. 6-50 6.3.20 Remove the APL Valve
  Assembly…………………………………………………………
  6-53

  6.4 Electrical and Pneumatic
  Connections………………………………………………………………..
  6-53 6.4.1 Electrical
  Connections…………………………………………………………………………..
  6-54 6.4.2 Pneumatic Connections
  …………………………………………………………………………
  6-58 6.4.3 Connections between Pneumatic Circuit, Breathing System
  and Monitor
  Board…………………………………………………………………………………………………………………..
  6-70

  7 Parts
  ………………………………………………………………………………………………………………….
  7-1 7.1 Main Unit
  …………………………………………………………………………………………………………
  7-1

  7.1.1 Main Unit
  ……………………………………………………………………………………………..
  7-1 7.1.2 Top Panel Assembly
  ……………………………………………………………………………….
  7-4 7.1.3 Left Front Panel
  Assembly………………………………………………………………………
  7-5 7.1.4 Display
  Assembly…………………………………………………………………………………..
  7-7 7.1.5 Trolly Assembly (with Auxiliary Electrical Outlet/Euro
  Standard/220V) ……… 7-8 7.1.6 Trolly Drawer Assembly
  ……………………………………………………………………….
  7-10

• 5

  7.1.7 Trolly Rear Panel
  Assembly……………………………………………………………………7-11
  7.1.8 Modular Rack Assembly
  ……………………………………………………………………….
  7-12 7.1.9 Ground Plate Assembly of Modular
  Rack……………………………………………….. 7-13
  7.1.10 Circuit Bracket
  Assembly…………………………………………………………………….
  7-14 7.1.11 Tabletop Assembly
  ……………………………………………………………………………..
  7-15 7.1.12 Tabletop Operation Console Assembly
  …………………………………………………. 7-17
  7.1.13 Isolation Transformer Mounting
  Assembly……………………………………………. 7-19
  7.1.14 Auxiliary Electrical Outlet Assembly (220V)
  ………………………………………… 7-20 7.1.15 Power
  Box Assembly
  ………………………………………………………………………….
  7-21 7.1.16 Rear Plate Assembly
  …………………………………………………………………………..
  7-23 7.1.17 CIS
  Assembly…………………………………………………………………………………….
  7-24 7.1.18 O2, N2O and AIR Supplies Inlet
  Assemblies…………………………………………. 7-26
  7.1.19 Auxiliary O2 Supply
  Assembly…………………………………………………………….
  7-27 7.1.20 O2+AIR System
  Switch………………………………………………………………………
  7-28 7.1.21 O2 Flush Button Assembly
  ………………………………………………………………….
  7-29 7.1.22 ACGO
  Assembly………………………………………………………………………………..
  7-30 7.1.23 Gas Reservoir Assembly
  ……………………………………………………………………..
  7-31 7.1.24 Expiratory Valve Assembly
  ………………………………………………………………….
  7-32 7.1.25 Throttling Device
  (O2+N2O+AIR)……………………………………………………….
  7-34 7.1.26 O2 Cylinder Bracket
  Assembly…………………………………………………………….
  7-35 7.1.27 N2O Cylinder Bracket
  Assembly………………………………………………………….
  7-36 7.1.28 Double-vaporizer Manifold Assembly
  ………………………………………………….. 7-37
  7.1.29 Single-vaporizer Manifold
  Assembly…………………………………………………….
  7-39 7.1.30 AGSS Assembly
  …………………………………………………………………………………
  7-40

  7.2 Breathing
  Circuit……………………………………………………………………………………………..
  7-42 7.2.1 Lifting Device
  Assembly……………………………………………………………………….
  7-42 7.2.2 Sodalime Canister
  Assembly………………………………………………………………….
  7-44 7.2.3 Canister Connection Block
  Assembly……………………………………………………..
  7-45 7.2.4 BYPASS Upper Cover
  Assembly……………………………………………………………
  7-46 7.2.5 Bag Arm Assembly
  ………………………………………………………………………………
  7-47 7.2.6 Upper Cover Assembly
  …………………………………………………………………………
  7-48 7.2.7 APL Valve
  Assembly…………………………………………………………………………….
  7-49 7.2.8 Bag/mechanical Ventilation Switch
  Assembly…………………………………………. 7-51
  7.2.9 Median Plate
  Assembly…………………………………………………………………………
  7-52 7.2.10 Lower Cover
  Assembly……………………………………………………………………….
  7-54 7.2.11 Expiratory Flow Sensor Assembly
  ………………………………………………………..
  7-55 7.2.12 Inspiratory Flow Sensor Assembly
  ……………………………………………………….
  7-56 7.2.13 Upper Cover 2 Assembly
  …………………………………………………………………….
  7-57 7.2.14 Folding Bag Assembly
  ………………………………………………………………………..
  7-58 7.2.15 Lower Cover 2
  Assembly…………………………………………………………………….
  7-59 7.2.16 Airway Pressure Gauge Assembly
  ………………………………………………………..
  7-60

• 6

  FOR YOUR NOTES

• 1-1

  1 Safety

  1.1 Safety Information

  DANGER

  z Indicates an imminent hazard that, if not avoided, will result
  in death or serious injury.

  WARNING

  z Indicates a potential hazard or unsafe practice that, if not
  avoided, could result in death or serious injury.

  CAUTION

  z Indicates a potential hazard or unsafe practice that, if not
  avoided, could result in minor personal injury or product/property
  damage.

  NOTE

  z Provides application tips or other useful information to
  ensure that you get the most from your product.

• 1-2

  1.1.1 Dangers There are no dangers that refer to the product in
  general. Specific Danger statements may be given in the respective
  sections of this manual.

  1.1.2 Warnings

  WARNING

  z This equipment must be installed by factory authorized
  engineers and adequate training of its use should be delivered to
  its user before it is put into use.

  z There is high voltage inside the equipment. Never disassemble
  the equipment before it is disconnected from the AC power
  source.

  z This equipment can be disassembled by Mindray trained and
  authorized personnel only.

  z Be sure of static discharge before disassembling the
  equipment. Wear antistatic wrist straps or gloves when
  disassembling the parts labelled with static-sensitive symbolsto
  avoid damage to the parts.

  z The equipment must be connected to a properly installed power
  outlet with protective earth contacts only. If the installation
  does not provide for a protective earth conductor, disconnect it
  from the power line.

  z Dispose of the packaging materials, observing the applicable
  waste control regulations and keeping it out of childrens
  reach.

  1.1.3 Cautions

  CAUTION

  z Make sure that no electromagnetic radiation interferes with
  the performance of the equipment when preparing to carry out
  performance tests. Mobile phone, X-ray equipment or MRI devices are
  a possible source of interference as they may emit higher levels of
  electromagnetic radiation.

  z Before connecting the equipment to the power source, check
  that the power source conforms to the requirements specified in the
  Operators Manual.

• 1-3

  1.1.4 Notes

  NOTE

  z Refer to Operators Manual for detailed operation and other
  information.

  1.2 Equipment Symbols

  Attention: Consult accompanying documents (this manual)

  Dangerous voltage

  Alternating current Fuse

  Battery Equipotential

  Operating state Autoclavable

  Material description

  Not autoclavable

  Power On

  Power Off

  Reset

  Standby

  Alarm silence key MV&TVe alarm key

  Normal screen key O2 flush button

  ACGO On

  ACGO Off

  Bag position/ manual ventilation

  Mechanical ventilation

  Lock

  Unlock

  Network connector Flow control

• 1-4

  USB connector O2 sensor connector

  Air supply connector

  N2O supply connector

  Upward (Pop-off valve)

  Sample gas return port (to the AGSS)

  VGA connector

  O2 supply connector

  Table top light

  AGSS outlet

  Cylinder

  PEEP outlet

  Isolation transformer

  Vaporizer

  APL valve

  CIS connector

  Maximum level of the sodalime canister

  CAUTION HOT

  Gas input direction

  Lock or unlock as the arrow shows

  Lock the lifting device Unlock the lifting device

  Approximate

  Do Not Crush

  Max. weight: 11.3 kg Please align!

  Max. weight: 30 kg

  Type BF applied part. Defibrillation-proof protection against
  electric shock.

  Pipeline Driven by air

• 2-1

  2 Theory of Operation

  2.1 Pressure Unit Conversion Table

  Pa hPa kPa MPa mmHg atm cmH2O mbar bar PSI 1 10-2 10-3 10-6
  7.5X10-3 9.8X10-6 1.02X10-2 1X10-2 1X10-5 1.45X10-4

  1X102 1 1X10-1 1X10-4 0.75 9.8X10-4 1.02 1 1X10-3 1.45X10-2

  1X10-3 10 1 1X10-3 7.5 9.8X10-3 10.2 10 1X10-2 0.145

  1X106 1X104 1X103 1 7.5X103 9.8 1.02X104 1X104 10 145

  1.33X102 1.33 0.133 1.33X10-4 1 1.32X10-3 1.36 1.33 1.33X10-3
  1.93X10-2

  1.01X105 1.01X103 101 0.101 760 1 1.03 X103 1.01X103 1.01
  14.7

  98.1 0.98 9.8X10-2 9.8X10-5 0.736 9.68X10-4 1 0.98 9.8X10-4
  1.42X10-2

  1X102 1 0.1 1X10-4 0.75 9.8X10-4 1.02 1 1X10-3 1.45X10-2

  1X105 1X103 1X102 0.1 750 0.98 1.02X103 1X103 1 14.5

  6.89X103 68.9 6.89 6.89X10-3 51.7 6.8X10-2 70.3 68.9 6.89X10-2
  1

• 2-2

  2.2 Gas Flow

  2.2.1 Pneumatic Circuit Diagram

  vapo

  rize

  r va

  pori

  zer

  Patie

  nt

  Was

  te g

  as d

  ispos

  al

  Patie

  nt

  Air

• 2-3

  2.2.2 Parts List

  1 O2 P-Line 28 Float flowmeter

  2 O2 cylinder 29 Double-vaporizer manifold

  3 Air P-Line 30 Check valve

  4 N2O P-Line 31 Pressure relief valve (38 kPa)

  5 N2O cylinder 32 ACGO selector switch

  6 Regulator (0.4 MPa) 33 Inspiratory valve

  7 Safety valve (0.7 MPa) 34 Sodalime canister

  8 Filter 35 BYPASS valve

  9 Regulator (0.2 MPa) 36 Expiratory valve

  10 Inlet gas flow regulator 37 Inspiratory flow sensor

  11 Flow sensor (Venturi) 38 Expiratory flow sensor

  12 Mechanical overpressure valve (100 cmH2O)

  39 O2 flow sensor

  13 Pop-Off valve 40 Scavenging reservoir and noise
  eliminator

  14 PEEP safety valve 41 Bag/mechanical ventilation switch

  15 Pressure switch (140 kPa) 42 Manual bag

  16 Proportional PEEP valve 43 APL valve

  17 Expiratory valve 44 Modular rack (supporting gas module)

  18 Pneumatic resistor 45 Bellows assembly

  19 O2 flush valve 46 Auxiliary O2 supply

  20 Pressure switch (37 kPa) 47 Airway pressure gauge

  21 Flow restrictor 48 Pressure sensor

  22 System switch 49 Water collection cup

  23 Pressure switch (0.2 MPa) 50 Single-vaporizer manifold

  24 Regulator (0.2 MPa) 51 Pressure relief valve (10 cmH2O)

  25 O2-N2O cut-off valve0.1 MPa 52 Negative pressure valve1 cmH2O
  26 Flow control assembly (flow

  regulator 53 Pressure sensor

  27 Electronic flowmeter&throttling device

  54 AGSS (AGSS transfer and receiving system)

  55 Pressure relief valve (11 kPa)

• 2-4

  2.2.3 Key to Symbols

  Filter

  Regulator

  Pressure gauge

  Check valve

  Gas supply connector

  Pressure relief valve

  Flowmeter

  Flow control valve

  Pressure switch Flow restrictor

  2.2.4 Description 2.2.4.1 Gas Supplies

  The above picture shows the O2 pipeline supply inlet assembly.
  The anesthesia machines pneumatic circuit starts from the gas
  supplies, which functions to introduce the external pipeline or
  cylinder gases into the machine. Since the pressure of external gas
  is very high and the external gas contains foreign substance,
  pressure reducing valves, filters and pressure relief valves are
  available in the supply gas circuit. Also, check valves are
  equipped in the supply gas circuit to prevent gas from flowing back
  into the pipeline or cylinder. The following figures show the
  supply gas circuit.

  O2 pipeline supply inlet

  Pressure sampling connector for pipeline supply gas pressure
  gauge

  Drive gas connector

  Fresh gas inlet

  24. Regulator 23. Pressure switch

  7. Safety valve

• 2-5

  The anesthesia machine has pipeline and cylinder gas supplies
  available. Pipeline gas supplies, which are O2, N2O and Air, go
  into the pipeline gas supply inlet assemblies through pipeline
  connectors 1, 3 and 4 respectively. The pipeline pressure ranges
  between 280 and 600 kPa. Cylinder gas supplies, which are O2 and
  N2O, go into the system through cylinder connectors 2 and 5
  respectively. The O2 and N2O cylinder pressures are 6.915 MPa and
  4.26 MPa respectively, which are decreased to approximately 400 kPa
  through regulator 6. Each connector is clearly marked and designed
  to prevent misconnection. All connectors have filters and check
  valves. Color coded gauges show the pipeline and cylinder
  pressures. Pressure relief valve 7 functions to prevent the supply
  gas pressure from being too high. It releases excess gas when gas
  pressure exceeds 750 kPa. Each supply gas is outputted after gas
  pressure is decreased below 200 kPa through regulator 24. Pressure
  switch 23 monitors the O2 supply pressure. When O2 supply pressure
  is less than approximately 200 kPa, the ventilator gives the alarm
  of O2 supply failure.

  O2 pipeline supply inlet assembly

  Air pipeline supply inlet assembly

  N2O pipeline supply inlet assembly

• 2-6

  The following picture shows the output connectors of O2 pipeline
  supply inlet assembly.

  2.2.4.2 Anesthetic Gas Delivery System

  The anesthetic gas delivery system is connected to the gas
  supplies, anesthetic gas delivery device (vaporizer) and breathing
  system. N2O, O2 and Air supplies enter the anesthetic gas delivery
  system and the mixed gas (namely fresh gas) containing these three
  gases and anesthetic agent and pure O2 (for auxiliary O2 supply and
  flushing O2) are outputted. The following figure shows the
  pneumatic circuit of anesthetic gas delivery system.

  Fresh gas tube (200 kPa)

  Drive gas tube

  Pressure sampling tube for O2 supply gas pressure gauge

• 2-7

  The following picture takes O2+N2O+Air configuration as an
  example to illustrate how pipeline gas supplies are outputted. O2
  is divided into two pathways (into three pathways if auxiliary O2
  supply is configured: system switch 23, O2 flush valve 19 and
  auxiliary O2 supply 46 respectively). One pathway of O2 flows into
  system switch 23 and the other into O2 flush valve 19. N2O flows
  into O2-N2O cut-off valve 25 and Air into system switch 23.

  N2O pipeline supply inlet assembly

  O2 pipeline supply inlet assembly

  Air pipeline supply inlet assembly

  N2O tube

  O2 tube

  Air tube

  25. O2-N2O cut-off valve

  23.System switch

  19. O2 flush valve

• 2-8

  When system switch 22 is turned on, Air enters flow regulator
  26. O2 is divided into two pathways. One pathway of O2 flows into
  flow regulator 26 and the other into O2-N2O cut-off valve 25. If
  the pressure of O2 vented into O2-N2O cut-off valve 25 is greater
  than 0.1 MPa, N2O can enter flow regulator 26, as shown below.

  N2O tube

  Air tube

  O2 tube

  26. Flow regulator

• 2-9

  Flow regulator 26 controls gas flows. The gases passing through
  flow regulator 26 enter electronic flowmeter&throttling device
  27 and are then converged to enter float flowmeter 28, as shown
  below.

  Air tube

  N2O tube

  O2 tube

  27.Throttling device

  Tube for converged gas tube

  32. ACGO selector switch

• 2-10

  The converged gas goes from float flowmeter 28 to the anesthetic
  gas delivery device (vaporizer), forming fresh gas after mixed with
  anesthetic agent. The fresh gas then goes from check valve 30
  through the ACGO assembly to the breathing system. The flushing O2
  also enters the breathing system through the ACGO assembly.

  When ACGO is turned on, the anesthesia machine stops mechanical
  ventilation. The fresh gas is directly outputted through the
  inspiration connector on the breathing circuit. Mechanical pressure
  relief valve 55 on the ACGO prevents gas pressure at the ACGO port
  from exceeding 12.5 kPa when ACGO is turned on.

  Gas tube from float flowmeter to anesthetic gas delivery
  device

  Inlet of anesthetic gas delivery device

  Outlet of anesthetic gas delivery device

  From anesthetic gas delivery device to ACGO

  From O2 flush to ACGO

• 2-11

  System Switch Assembly

  The above picture shows the system switch assembly. Supply gases
  of Air and O2 go into system switch 22; and Air & O2 flowing
  into the flowmeter assembly and O2 into the control end of the
  O2-N2O cut-off valve are outputted. System switch has an electrical
  outlet which controls the power-on status of the system. When the
  system switch is turned on, O2 and Air enter the anesthetic gas
  delivery system and the system is powered on simultaneously. The
  anesthetic ventilator starts to monitor the status of the system.
  When the system switch is turned off, O2 and Air cannot enter the
  anesthetic gas delivery system and the system is powered off.

  O2-N2O Cut-off Valve Assembly

  The above picture shows the O2-N2O cut-off valve assembly.
  O2-N2O cut-off valve 25 is a pneumatically controlled three-way
  valve. O2 is uploaded to the control end of the O2-N2O cut-off
  valve to conduct on-off control of N2O. When the O2 supply pressure
  is less than 0.1 MPa (approximate value), N2O supply is cut off.
  When the O2 supplyp pressure is greater than 0.1 MPa (approximate
  value), N2O supply is switched on. O2-N2O cut-off valve 25 does not
  affect Air supply.

• 2-12

  Flow Control Assembly

  The above picture shows the left front panel where the flow
  control assembly and flow display assembly are located. Flow
  control assembly 26 (flow regulator) controls the gas flows and the
  proportion between O2 and N2O as well to ensure that the gas flows
  outputted are adjustable within the range of 015 L/min. O2
  concentration is controlled not to be less than 25%. When N2O flow
  is greater than 1.0 L/min, the minimum O2 concentration is less
  than 40%. Turning flow controls counterclockwise increases the flow
  and clockwise decreases the flow.

  Flow Display Assembly

  Electronic flowmeter&throttling device 27 and float
  flowmeter 28 constitute the flow display assembly. Gases from the
  flow regulators enter into the flow display assembly and mixed gas
  going through the anesthetic gas delivery device (vaporizer) is
  outputted. Electronic flowmeter&throttling device 27 measures
  and displays the flow of each gas. Float flowmeter 28 displays the
  total gas flow. The flow range displayed is from 0.05 to 10 L/min
  at the resolution of 0.5 L/min. The measurement accuracy is
  required to be 10% of the reading. The scale starts from 0.5 L/min
  and increases by 0.5 L/min when flow is within 0.5 to 2 L/min and
  by 1 L/min when flow is within 2 to 10 L/min.

  26.Flow regulator 27.Throttling device

  28.Float flowmeter

  Flow sampling point and display board

• 2-13

  O2 Flush Button Assembly

  The above picture shows the O2 flush button assembly. When O2
  flush valve 19 is depressed, O2 rushes into the pneumatic circuit
  which is cut off when this valve is released. The O2 supply gas at
  0.2 MPa after regulated goes through the O2 flush valve, the ACGO
  assembly, and into the breathing system. The O2 flush button
  assemby is not affected by the system switch. Flushing O2 can be
  performed as long as O2 supply is normal. The O2 flush valve has a
  slide valve structure inside which ensures automatic reset each
  time the valve is depressed and released via the spring.

  Vaporizer Manifold

  The above picture shows the single-vaporizer manifold assembly.
  The anesthetic gas delivery device (vaporizer) is connected to the
  anesthetic gas delivery system. The mixed gas of N2O, O2 and Air go
  into the device and the fresh gas containing these three gases and
  anesthetic agent is finally outputted to the ACGO assembly. The
  following figure shows the pneumatic circuit of anesthetic gas
  delivery device (vaporizer).

• 2-14

  Either double-vaporizer manifold 29 or single -vaporizer
  manifold 50 is used. Both are integrated with check valve 30 which
  prevents flushing O2 and fresh gas from flowing back to the
  vaporizer. When a double-vaporizer manifold is used, Selectatec
  mounting with interlocking function can prevent the user from
  turning on two vaporizers simultaneously.

  ACGO Assembly

  The above picture shows the ACGO assembly. The ACGO assembly
  includes five parts: pressure switch 20, flow restrictor 21,
  pressure relief valve 31, ACGO selector switch 32 (three-way valve)
  and contact switch. Flushing O2 and fresh gas are mixed through the
  three-way valve and enter the ACGO. The outputs include fresh gas
  provided for the breathing system (when ACGO is turned off) and
  that provided for the patient (when ACGO is turned on). Pressure
  relief valve 31 at the front restricts the pressure of flushing O2
  and also that of the fresh gas not to exceed 38 kPa (approximate
  value). Pressure relief valve 55 at the back ensures that the
  pressure of the gas outputted to the ACGO does not exceed 12.5
  kPa.

  Auxiliary O2 Supply Assembly

  Auxiliary O2 supply assembly 46 has two optional input ports (as
  shown below). O2 goes from O2 supply inlet assembly, with flow
  controlled by a flow regulator and displayed by a glasstube
  flowmeter, into the patient. The flow range adjusted is from 0 to
  15 L/min and that displayed is from 0 to 10 L/min at the resolution
  of 1 L/min. Turning the flow control counterclockwise increases the
  flow and clockwise decreases the flow.

  Vaporizer Vaporizer

• 2-15

  2.2.4.3 Pneumatically-controlled Module of the Anesthetic
  Ventilator

  The pneumatically-controlled module of the anesthetic ventilator
  provides drive gas for the patient to breathe. O2 (or Air) from the
  gas supply inlet assembly enters the pneumatically-controlled
  module and is outputted in three pathways: drive gas entering the
  breathing system, drive gas discharged through the AGSS outlet and
  drive gas discharged through the PEEP outlet. The ventilator
  controls drive gas flow to prevent too high pressure inside the
  pneumatic circuit from injuring the patient. The following picture
  shows the gas flow direction and parts concerning the
  pneumatically-controlled module.

  Pneumatically-controlled module

  Input tube of the pneumatically-controlled module

  Outputs drive gas

  Gas exhaust tube

  Outputs gas discharged through PEEP outlet

  Two optional input ports (select either of them)

• 2-16

  The following is the pneumatic circuit diagram of the
  pneumatically-controlled module.

  Proportional electromagnetic valve 10 controls inlet gas flow.
  Filter 8 filters drive gas again. Regulator 9 regulates presssure
  inside the pneumatic circuit (approximately 0.2 MPa). 11 is a flow
  sensor of differential pressure type which monitors gas flow in the
  drive gas circuit. Mechanical overpressure valve 12 ensures that
  the pressure in the drive gas circuit does not exceed safe
  pressure. It releases excess gas when gas pressure exceeds 11 kPa..
  17 is expiratory valve. During expiration, gas inside the bellows
  is discharged from this valve. The PEEP function is performed
  through expiratory valve. 16 is low-flow proportional
  electromagnetic valve. When it opens, gas is bled from pneumatic
  resistor 18, forming relatively stable pressure in the pneumatic
  circuit between 16 and 18. Such pressure is exerted on the membrane
  of expiratory valve 17 to form PEEP. To prevent too high pressure
  inside the pneumatic circuit from injuring the patient and damaging
  the equipment, safety valve 14, which is electromagnetic on-off
  valve, is placed before the gas pathway of the expiratory valve. 15
  is a pressure switch. When drive gas pressure is less than 140 kPa,
  an alarm is triggered. 48 is a pressure sensor which monitors the
  pressure at which the expiratory valve is closed. Pressure relief
  valve 51 ensures the tube pressure after the expiratory valve is
  less than 10 cmH2O.

• 2-17

  2.2.4.4 Breathing System

  The breathing system provides a closed loop for the anesthetic
  gas. The CO2 in the patients expired gas can be inspired in the
  inspiration phase to maintain the temperature and humidity
  conditions of the patients expired gas. During inspiration, the
  drive gas depresses the bag inside the bellows to force the inside
  gas to enter the patients lung. During expiration, the patients
  expired gas goes into the bag inside the bellows. Sodalime canister
  34 absorbs CO2 the patient expires. The following figure shows the
  pneumatic circuit of breathing system.

  Manual and mechanical ventilation modes are selected through the
  bag/mechanical ventilation switch. When manual ventilation is
  selected, the doctor presses manual bag 42 to supply gas for the
  breathing system. APL valve 43 is used to adjust the pressure
  inside the pneumatic circuit in case of manual ventilation. When
  mechanical ventilation is selected, the ventilator starts to work.
  It controls the drive gas to depress the folding bag inside bellows
  45 and supply gas for the breathing system as per the selected
  ventilation mode.

• 2-18

  Connected to the anesthesia machine main unit through the
  circuit adapter, the breathing system is highly integrated. Its
  tubes are all built in except the tube connected to the patient and
  the O2 cell cable, as shown below.

  Circuit adapter

  43.APL valve

  41.Bag/mechanical ventilation switch

  45.Bellows assembly Bag arm

  47.Airway pressure gauge

  36.Expiratory valve

  33. Inspiratory valve

  36.

  Patient end (built-in inspiratory and expiratory flow
  sensors)

• 2-19

  In case of mechanical ventilation, during inspiration, gas flows
  through bag/mechanical ventilation switch 41, BYPASS valve 35 or
  sodalime canister 34, inspiratory valve 33, O2 sensor 39, airway
  pressure gauge 47, and inspiratory flow sensor 37 to the patient.
  During expiration, gas flows through expiratory flow sensor 38,
  expiratory valve 36 and bag/mechanical ventilation switch 41 to the
  folding bag. Airway pressure is monitored by pressure sensor 53.
  The breathing system is easily disassembled and is autoclavable at
  134.

  2.2.4.5 Anesthetic Gas Scavenging System

  The anesthetic gas scavenging system (AGSS) is composed of AGSS
  transfer system, AGSS receiving system and AGSS disposal system.
  Waste gas goes from the exhaust port of the anesthesia machine
  through the AGSS transfer system and the AGSS receiving system and
  to the hospitals waste gas disposal system (AGSS disposal system),
  as shown below.

  The following figure shows the operational theory of the AGSS.
  The throttling holes reduce the effect of negative pressure at the
  AGSS outlet onto the flow at the entrance. The float helps the user
  to learn if the disposal system meets the requirement for minimum
  pump rate. The filter filters foreign substance to prevent the
  disposal system from being occluded. The gas reservoir is connected
  to the air through pressure compensation openings. When
  positive

  49. Water collection cup

  34. Sodalime canister

  Lifting device (built-in BYPASS valve)

• 2-20

  or negative pressure occurs inside the gas reservoir, gas is
  inputted or outputted to ensure pressure balance inside the
  system.

  The AGSS transfer system is a blue tube with 30 mm conical
  connectors at both ends. The inlet of the transfer system is a
  female 30 mm conical connector and the outlet a male 30 mm conical
  connector. The transfer system is connected to the receiving system
  through the male 30 mm conical connector. The receiving system is
  connected to the receiving hose through the proprietary connector.
  The receiving hose is connected to the hospitals disposal system
  through BS 6834 connector. The following picture shows the
  structures of and the connections between the AGSS transfer system,
  receiving system and disposal system.

  Receiving system

  Receiving hose

  To the disposal system

  Hook

  Transfer system

  To the exhaust port

• 3-1

  3 Checkout and Test

  WARNING

  z After servicing the equipment or replacing its components,
  complete all the tests in this section.

  z Before doing the tests in this section, completely reassemble
  the equipment and refer to 4Maintenance and Calibration to do
  necessary calibrations.

  3.1 System Inspection

  NOTE

  z Make sure that the breathing circuit is correctly connected
  and not damaged. z The top shelf weight limit is 30 kg.

  WARNING

  z Do not leave gas cylinder valves open if the pipeline supply
  is in use. Cylinder supplies could be depleted, leaving an
  insufficient reserve supply in case of pipeline failure.

  Make sure that:

  1. The equipment is not damaged.

  2. All components are correctly attached.

  3. The breathing circuit is correctly connected and the
  breathing tubes are not damaged.

  4. The vaporizers are locked in position.

  5. The gas supplies are connected and the pressures are
  correct.

  6. Cylinder valves are closed on models with cylinder
  supplies.

  7. The casters are not loose and the brake (s) is set and
  prevents movement.

  8. Make sure the circuit is locked safely (in the position).

  9. The power cord is correctly connected. The AC mains indicator
  and the battery indicator work normally.

  10. The anesthesia machine is switched on or off normally.

• 3-2

  3.2 Pipeline Tests

  WARNING

  z Do not leave gas cylinder valves open if the pipeline supply
  is in use. Cylinder supplies could be depleted, leaving an
  insufficient reserve supply in case of pipeline failure.

  1. Disconnect the pipeline supplies and close all cylinder
  valves. Bleed all the gas inside the machine to let the pressure
  gauges go to zero. f the gauge fails to go to zero, it indicates
  that the gauge is faulty.

  2. Connect an O2 pipeline supply.

  3. Set the system switch to the position.

  4. Set the flow controls to mid range.

  5. Check that the pressure reading on the O2 gauge is within the
  range of 280 to 600 kPa (if not, adjust the O2 pipeline output
  pressure). Check that other gauges go to zero.

  6. Disconnect the O2 pipeline supply.

  7. As O2 pressure decreases, alarms for [O2 Supply Failure] and
  [Drive Gas Pressure Low] should occur. The alarm for [Drive Gas
  Pressure Low] occurs only when O2 is the drive gas.

  8. Connect other pipeline supplies. Check that the readings on
  the gauges fall within the range of 280 to 600 kPa.

  3.3 Cylinder Tests

  NOTE

  z To prevent damage, open the cylinder valves slowly. z After
  doing the cylinder tests, close all cylinder valves if cylinder
  supplies are not

  used.

  z Turn the flow controls slowly. Do not turn further when the
  flow indicated through the flowmeter is outside of the range to
  avoid damaging the control valve.

  This test is not required if cylinders are not configured.

• 3-3

  3.3.1 Check the Cylinders are Full

  1. Set the system switch to the position and connect the
  cylinders to be checked.

  2. Open each cylinder valve.

  3. Make sure that each cylinder has sufficient pressure. If not,
  close the applicable cylinder valve and install a full
  cylinder.

  4. Close all cylinder valves.

  3.3.2 Cylinder High Pressure Leak Test

  1. Make sure that the system switch is in the position.

  2. Close the auxiliary O2 supply flowmeter if auxiliary O2
  supply is configured.

  3. Open the cylinder valve.

  4. Record the current cylinder pressure.

  5. Close the cylinder valve.

  6. Record the cylinder pressure after one minute. There is a
  leak

  If the cylinder pressure for drive gas decreases more than 5000
  kPa (725 psi). If the cylinder pressure for non-drive gas decreases
  more than 690 kPa (100 psi). In this case, install a new cylinder
  gasket and repeat steps 1 through 6. If the leak

  continues, do not use the system.

  7. Repeat 3.3.2Cylinder High Pressure Leak Test for each
  cylinder.

  3.4 Flow Control System Tests

  3.4.1 Without O2 Sensor

  WARNING

  z If N2O is available and flows through the system during this
  test, use a safe and approved procedure to collect and remove
  it.

  z Incorrect gas mixtures can cause patient injury. If the O2-N2O
  Link system does not supply O2 and N2O in the correct proportions,
  do not use the system.

• 3-4

  To do the flow control system tests:

  1. Connect the pipeline supplies or slowly open the cylinder
  valves.

  2. Turn all flow controls fully clockwise (minimum flow).

  3. Set the system switch to the position.

  4. Set the flow controls to mid range. Check that the flowtube
  float moves smoothly and that the electronic flowmeter displays
  normally.

  5. Test the Link system with N2O flow increasing:

  a.Turn the O2 and N2O flow controls fully clockwise (minimum
  flow).

  b.Turn the N2O flow control only.

  c.Increase the N2O flow gradually as shown in the table. Make
  sure that the O2 flow must be greater than the minimum limits.

  d.If the N2O flow is set crossing the limit, before continuing
  the test, turn the O2 flow control clockwise till the N2O flow
  decreases to the preset value.

  Step N2O flow (L/min) O2 flow (L/min)

  1 0.6 0.2 2 1.5 0.5 3 3.0 1.0 4 7.5 2.5

  6. Test the Link system with O2 flow decreasing:

  a.Set the N2O flow to 9.0 L/min.

  b.Set the O2 flow to more than 3 L/min.

  c.Slowly turn the O2 flow control clockwise to set the N2O flow
  to the rates shown in the table. Make sure that the O2 flow must be
  greater than the minimum limits.

  d.If the O2 flow is set crossing the limit, before continuing
  the test, turn the N2O flow control counterclockwise till the N2O
  flow increases to the preset value.

  Step N2O flow (L/min) O2 flow (L/min)

  1 7.5 2.5 2 3.0 1.0 3 1.5 0.5 4 0.6 0.2

  7. Disconnect the O2 pipeline supply or close the O2 cylinder
  valve.

  8. Set the system switch to the position.

• 3-5

  3.4.2 With O2 Sensor Do as described in 3.9.2Test the O2
  Concentration Monitoring and Alarms before testing.To do the flow
  control system tests:

  1. Connect the pipeline supplies or slowly open the cylinder
  valves.

  2. Turn all flow controls fully clockwise (minimum flow).

  3. Set the system switch to the position.

  4. Set the flow controls to mid range. Check that the flowtube
  float moves smoothly and that the electronic flowmeter displays
  normally.

  5. Test the Link system with N2O flow increasing:

  a.Turn the O2 and N2O flow controls fully clockwise (minimum
  flow).

  b.Turn the N2O flow control only.

  c.Increase the N2O flow gradually and the O2 flow should
  increase accordingly. The measured O2 concentration must be 25%
  through the full range.

  6. Test the Link system with O2 flow decreasing:

  a.Set the N2O flow to 9.0 L/min.

  b.Set the O2 flow to more than 3 L/min.

  c.Slowly turn the O2 flow control clockwise and the N2O flow
  should decrease accordingly. The measured O2 concentration must be
  25% through the full range.

  7. Turn all the flow controls fully clockwise (minimum
  flow).

  8. Disconnect the pipeline supply or close the cylinder
  valve.

  3.5 Vaporizer Back Pressure Test

  WARNING

  z Use only the Selectatec series vaporizers. Make sure that the
  vaporizers are locked when doing the test.

  z During the test, the anesthetic agent comes out of the fresh
  gas outlet. Use a safe and approved procedure to remove and collect
  the agent.

  z To prevent damage, turn the flow controls fully clockwise
  (minimum flow or OFF) before using the system.

• 3-6

  Before the test, make sure that the vaporizers are correctly
  installed.

  1. Connect the O2 pipeline supply or open the O2 cylinder
  valve.

  2. Turn the O2 flow control and set the O2 flow to 6 L/min.

  3. Make sure that the O2 flow stays constant.

  4. Adjust the vaporizer concentration from 0 to 1%. Make sure
  that the O2 flow must not decrease more than 1 L/min through the
  full range. Otherwise, install a different vaporizer and try this
  step again. If the problem persists, the malfunction is in the
  anesthesia system. Do not use this system.

  5. Test each vaporizer as per the steps above.

  NOTE

  z Do not perform test on the vaporizer when the concentration
  control is between OFF and the first graduation above 0 (zero) as
  the amount of anesthetic drug outputted is very small within this
  range.

  3.6 O2 Flush Test

  3.6.1 In Mechanical Ventilation Mode

  1. Connect the O2 pipeline supply or cylinder.

  2. Set the bag/mechanical ventilation switch to the mechanical
  ventilation position.

  3. Set the system switch to the position or set the system to
  Standby.

  4. Plug the patient connection using a test plug.

  5. Turn off ACGO (if ACGO is configured).

  6. Let the folding bag completely collapse.

  7. Press and hold the O2 flush button . Measure the time
  required for fully inflating the folding bag.

  8. Repeat the operation (opening patient connection to collapse
  the folding bag) at least twice.

  9. Check that the folding bag is fully inflated within 1 to 3
  seconds.

• 3-7

  3.6.2 In Manual Ventilation Mode

  1. Set the bag/mechanical ventilation switch to the bag
  position.

  2. Set the system switch to the position or set the system to
  Standby.

  3. Plug the patient connection using a test plug.

  4. Connect a 3 L or 1 L bag to the bag arm or manual bag
  port.

  5. Turn off ACGO (if ACGO is configured).

  6. Let the bag completely collapse.

  7. Turn the APL valve to 75 cmH2O.

  7. Press and hold the O2 flush button . Measure the time
  required for the reading on the pressure gauge to reach 10
  cmH2O.

  8. Repeat the operation (opening patient connection to collapse
  the bag) at least twice.

  9. Check that

  The 3 L bag is fully inflated within 3 to 6 seconds. The 1 L bag
  is fully inflated within 1 to 3 seconds.

  3.7 Breathing Circuit Tests

  WARNING

  z Objects in the breathing circuit can stop gas flow to the
  patient. This can cause injury or death. Make sure that there are
  no test plugs or other objects in the breathing circuit.Make sure
  that there are no test plugs or other objects in the breathing
  circuit.

  z Do not use a test plug that is small enough to fall into the
  breathing circuit.

  1. Make sure that the breathing circuit is correctly connected
  and not damaged.

  2. Make sure that the check valves in the breathing circuit work
  correctly:

  The inspiratory check valve opens during inspiration and closes
  at the start of expiration.

  The expiratory check valve opens during expiration and closes at
  the start of inspiration.

• 3-8

  3.7.1 Bellows Test

  1. Set the system to Standby.

  2. Set the bag/mechanical ventilation switch to the mechanical
  ventilation position.

  3. Set all flow controls to minimum.

  4. Close the breathing circuit by plugging the patient
  connection.

  5. Push the O2 flush button to fill the bellows, folding bag
  rising to the top.

  6. Make sure that the pressure reading on the airway pressure
  gauge must not increase to more than 15 cmH2O

  7. The folding bag should not fall. If it falls, it indicates
  that the bellows assembly has a leak. You need to reinstall the
  bellows or folding bag.

  3.7.2 Breathing System Leak Test in Mechanical Ventilation

  Mode

  NOTE

  z Perform leak test again each time after servicing the
  anesthesia machine, replacing the components, or re-connecting the
  tubes.

  The test aims to check if the pneumatic circuit has leaks in
  mechanical ventilation mode. Test items include bellows, drive gas
  circuit, sodalime canister, patient tubes, flow sensors and their
  connectors.

  3.7.2.1 Test Procedures

  NOTE

  z Breathing circuit leak test must be performed when the system
  is Standby. z Before doing the breathing circuit leak test, make
  sure that the breathing circuit is

  correctly connected and the breathing tubes not damaged.

  z Before doing the breathing system leak test, make sure that
  the drive gas pressure is sufficient. During the leak test, make
  sure that the test procedures are strictly followed.

  z During the leak test, selecting [Stop] will stop the ongoing
  leak test. To continue the test, you must select [Start] to start
  the leak test again.

• 3-9

  To do the breathing system leak test in mechanical ventilation
  mode:

  1. Make sure that the system is Standby. If not, press the key
  and select [Ok] from the pop-up menu to enter Standby.

  2. Connect the Y piece on the breathing tube to the leak test
  plug on the manual bag port.

  3. Turn the O2 flow control to set the O2 flow to approximately
  0.150.2 L/min. 4. Push the O2 flush button to fill the bellows,
  folding bag rising to the top.

  5. Make sure that the bag/mechanical ventilation switch is set
  to the position.

  6. Select the [[Maintenance] shortcut key and select [Breathing
  System Leak Test >>]. Select [Start] from the [Breathing
  System Leak Test] menu to start the breathing system leak test in
  mechanical ventilation mode. Typically, the test requires 3 to 5
  minutes.

  7. When the leak test is completed, the message prompting test
  passed or failed is displayed. If the leak test is passed, it
  indicates that the leakage of the breathing system is within 0.15
  to 0.2 L/min. The breathing system has good airtightness. If the
  leak test is failed, it indicates that the leakage of the breathing
  system exceeds 0.15 to 0.2 L/min. In this case, you need to repair
  the system.

  NOTE

  z In case of leak test failure, check all of the possible leak
  sources, including bellows, breathing system tubes and sodalime
  canister. Check that they are correctly connected and their
  connectors are not damaged.

  z If there is indeed a leak, check the pneumatic circuit system
  for leakage and troubleshoot the problems as described in
  5.3Pneumatic Circuit System Problems.

  z After leak failure is troubleshot, do the leak test again and
  make sure the test is passed.

• 3-10

  3.7.2.2 Commonly-encountered Problems and Recommended
  Actions

  The following table lists the commonly-encountered problems and
  recommends actions for breathing system leak test in mechanical
  ventilation mode.

  Failure description Possible cause Recommended action

  The bag/mechanical ventilation switch is set to the bag position
  and the message [Manual Vent.] is prompted.

  Set the bag/mechanical ventilation switch to the mechanical
  ventilation position.

  Leak test failure is prompted immediately after [Start] is
  selected (typically, the leak test requires at least 3
  minutes).

  The reading on the drive gas (O2) pressure gauge indicates drive
  gas pressure low (lower than 200 kPa) and the alarm of [Drive Gas
  Pressure Low] is produced.

  Replace or connect gas supplies and make sure that the drive gas
  pressure is at 350 to 450 kPa.

  When the system works normally, the machine is not leaky and the
  bellows folding bag does not collapse but leak test is always
  failed.

  Fresh gas is not provided when leak test is performed.

  Make sure that fresh gas is provided.

  During leak test, the pressure indicated by the airway pressure
  gauge fails to reach 30 cmH2O.

  1. Before the leak test, the bellows folding bag is not fully
  inflated. 2. The Y piece on the breathing tube is not connected to
  the test plug. 3. The bellows housing is not properly
  installed.

  Check the connections of the pneumatic circuit and re-install
  the pneumatic circuit.

  During leak test, the pressure indicated by the airway pressure
  gauge reaches 30 cmH2O but then falls rapidly.

  1. The bellows housing may not be installed properly. 2. The
  expiratory valve assembly is leaky. 3. The circuit is not tightly
  connected to the circuit adapter. 4. The connection between the
  sampling line of the sensor and the board is leaky.

  Check the connections of the pneumatic circuit and re-install
  the pneumatic circuit.

• 3-11

  Failure description Possible cause Recommended action

  During leak test, the alarm of [Auxi Ctrl Module Error]
  occurs.

  The auxiliary control board is faulty.

  Replace the auxiliary control board.

  During leak test, the alarm of [Ventilator Hardware Error 11]
  occurs.

  Safety valve control failure by the auxiliary control board.

  During leak test, the alarm of [Ventilator Hardware Error 12]
  occurs.

  Safety valve control failure by the main control board

  Restart the machine. Verify if the safety valve is controllable
  by using the safety valve control command of the monitor board. If
  the safety valve is damaged, replace the safety valve. If the
  safety valve is in good condition, it indicates that the auxiliary
  control board or the main control board is faulty regarding the
  control path of the safety valve. Check the connecting lines or
  replace the faulty board.

  NOTE

  z In case of leak test failure, check the machine for leakage
  and roughly assess the amount of leakage by using the following
  methods.

  Method 1: In the default VCV mode, stop fresh gas supply. If the
  folding bag rises to the top each time, it indicates that the
  machine is not leaky. Otherwise, the machine is leaky. Gradually
  increase fresh gas. The amount of fresh gas when the bag rises to
  the top at each expiration can be roughly calculated as the amount
  of leakage.

  Method 2: During leak test, observe the airway pressure gauge. A
  period of time (about 30 s) belongs to pressure holding stage after
  the airway pressure rises. If the airway pressure gauge shows that
  airway pressure is gradually falling, it indicates that the machine
  is leaky. Slowly increase fresh gas until airway pressure stops
  falling. The amount of the then fresh gas can be calculated as
  amount of leakage.

  z If there is indeed a leak, check the pneumatic circuit system
  for leakage and troubleshoot the problems as described in
  5.3Pneumatic Circuit System Problems.

  z After leak failure is troubleshot, do the leak test again and
  make sure the test is passed.

• 3-12

  3.7.3 Breathing System Leak Test in Manual Ventilation Mode

  NOTE

  z Perform leak test again each time after servicing the
  anesthesia machine, replacing the components, or re-connecting the
  tubes.

  The test aims to check if the pneumatic circuit has leaks in
  manual ventilation mode. Test items include APL valve, check valve,
  sodalime canister, patient tubes, flow sensors and their
  connectors. To do the breathing system leak test in manual
  ventilation mode:

  1. Make sure that the system is Standby. If not, press the key
  and select [Ok] from the pop-up menu to enter Standby.

  2. Set the bag/mechanical ventilation switch to the bag
  position.

  3. Connect the manual bag to the manual bag port.

  4. Turn the APL valve control to fully close the APL valve (75
  cmH2O).

  5. Turn the O2 flow control to set the O2 flow to 0.15 to 0.2
  L/min.

  6. Close the breathing system at the patient connection.

  7. Push the O2 flush button to let the pressure increase to
  approximately 30 cmH2O on the airway pressure gauge.

  8. Release the O2 flush button. A pressure decrease on the
  airway pressure gauge indicates a leak. Look for and repair the
  breathing system leak.

  NOTE

  z If there is indeed a leak, check the pneumatic circuit system
  for leakage and troubleshoot the problems as described in
  5.3Pneumatic Circuit System Problems.

  z After leak failure is troubleshot, do the leak test again and
  make sure the test is passed.

• 3-13

  3.7.4 APL Valve Test

  1. Make sure that the system is Standby. If not, press the key
  and select [Ok] from the pop-up menu to enter Standby.

  2. Set the bag/mechanical ventilation switch to the bag
  position.

  3. Connect the manual bag to the manual bag port.

  4. Connect the Y piece on the breathing tube to the leak test
  plug on the manual bag port.

  5. Turn the APL valve control to let the pressure of APL valve
  stay at 30 cmH2O.

  6. Push the O2 flush button to inflate the manual bag.

  7. Make sure that the reading on the airway pressure gauge is
  with the range of 20 to 40 cmH2O.

  8. Turn the APL valve control to the MIN position.

  9. Set the O2 flow to 3 L/min. Turn any other gases off.

  10. Make sure that the reading on the airway pressure gauge is
  less than 5 cmH2O.

  11. Push the O2 flush button. Make sure that the reading on the
  airway pressure gauge does not exceed 10 cmH2O.

  12. Turn the O2 flow control to set the O2 flow to minimum. Make
  sure that the reading on the airway pressure gauge does not
  decrease below 0 cmH2O.

  NOTE

  z If the accuracy of the APL valve exceeds the range, refer to
  4.6Adjust the APL Valve.

• 3-14

  3.8 Pressure Relief Valve Test This test can be performed if
  ACGO is configured. Perform the pressure relief valve test by using
  the following tools:

  Anesthesia machine calibration device (quantity:1) Circuit
  adapter test fixture (quantity:1) Injector (100 ml) (quantity:1) 6
  silicone tube (quantity:2) PU tube (6X300) (quantity:1) Y piece
  (quantity:1) Test procedures:

  1. Turn the system switch off. Close all flow regulators. Turn
  on ACGO.

  2. Pull out the patient circuit. Mount the circuit adapter test
  fixture onto the circuit adapter.

  3. Connect the pressure sensor connector (positive pressure end)
  on the anesthesia machine calibration device and the injector
  (before mounting, pull out the push rod of the injector to the
  graduation of 100 ml) connector to two connectors of the Y piece
  through two6 silicone tubes. Connect the third connector of the Y
  piece to No.8 connector on the circuit adapter test fixture through
  the PU tube (6X300), as shown below.

  4. Push in the push rod of the injector to cause the pressure
  reading on the anesthesia machine calibration device to rise slowly
  (note to push in the rod at uniform and slow velocity to control
  the time required for the pressure reading to slowly rise to 100
  cmH2O more than 10 s). Continue pushing the push rod at uniform
  velocity until the rod stops. During the course of pushing in the
  injectors push rod, the pressure reading on the anesthesia machine
  calibration device tends to be stable after the tested pressure
  relief valve is opened. The pressure reading on the anesthesia
  machine calibration device after the tested pressure relief valve
  is opened should be within 100 to 125 cmH2O. Otherwise, the test is
  failed. In this case, you need to replace the pressure relief valve
  assembly (BOM number: 0621-30-69662).

• 3-15

  3.9 Alarm Tests

  3.9.1 Prepare for Alarm Tests

  1. Connect a test lung or manual bag to the Y piece patient
  connection.

  2. Set the bag/mechanical ventilation switch to the
  position.

  3. Set the system switch to the position.

  4. Set the system to Standby.

  5. Set the ventilator controls as follows:

  Ventilation mode: select the [Vent Mode] shortcut key and then
  [VCV]. [TV]: 500 ml. [Rate]:12 BPM. [I:E]: 1:2. [Plimit]: 30 cmH2O.
  [PEEP]: OFF.

  6. Push the O2 flush button to fill the bellows, folding bag
  rising to the top.

  7. Turn the O2 flow control to set the O2 flow to 0.5 to 1
  L/min.

  8 Press the key and select [Ok] from the pop-up menu to exit
  Standby.

  9. Make sure that:

  The ventilator displays the correct data. The folding bag inside
  the bellows inflates and deflates normally during

  mechanical ventilation.

• 3-16

  3.9.2 Test the O2 Concentration Monitoring and Alarms

  NOTE

  z This test is not required if O2 sensor is not configured.

  1. Set the bag/mechanical ventilation switch to the
  position.

  2. Remove the O2 sensor and make sure that the sensor measures
  approximately 21% O2 in room air.

  3. Select the [Alarm Setup] shortcut key and then [Ventilator
  >>]. Set the FiO2 low alarm limit to 50%.

  4. Make sure that a low FiO2 alarm occurs.

  5. Set the FiO2 low alarm limit to a value less than the
  measured FiO2 value and make sure that the alarm cancels.

  6. Put the O2 sensor back in the circuit.

  7. Select the [Alarm Setup] shortcut key and then [Ventilator
  >>]. Set the FiO2 high alarm limit to 50%.

  8. Connect the manual bag to the manual bag port. Push the O2
  flush button to fill the manual bag. After two to three minutes,
  make sure that the sensor measures approximately 100% O2.

  9. Make sure that a high FiO2 alarm occurs.

  10. Set the FiO2 high alarm limit to 100% and make sure that the
  alarm cancels.

  3.9.3 Test the Low Minute Volume (MV) Alarm

  1. Make sure that MV alarm is turned on.

  2. Select the [Alarm Setup] shortcut key and then [Ventilator
  >>]. Set the MV low alarm limit to 8.0 L/min.

  3. Make sure that a low MV alarm occurs.

  4. Select the [Alarm Setup] shortcut key and then [Ventilator
  >>]. Set the MV low alarm limit to the default.

• 3-17

  3.9.4 Test the Apnea Alarm

  1. Connect the manual bag to the manual bag port.

  2. Set the bag/mechanical ventilation switch to the
  position.

  3. Turn the APL valve control to set the APL valve to the
  minimum position.

  4. Inflate the manual bag to make sure that a complete breathing
  cycle occurs.

  5. Stop inflating the manual bag and wait for at least 20
  seconds to make sure that the apnea alarm occurs.

  6. Inflate the manual bag to make sure that the alarm
  cancels.

  3.9.5 Test the Sustained Airway Pressure Alarm

  1. Connect the manual bag to the manual bag port.

  2. Turn the O2 flow control to set the O2 flow to minimum.

  3. Turn the APL valve control to set the APL valve to 30 cmH2O
  position.

  4. Set the bag/mechanical ventilation switch to the
  position.

  5. Push the O2 flush button for approximately 15 seconds. Make
  sure that the sustained airway pressure alarm occurs.

  6. Open the patient connection and make sure that the alarm
  cancels.

  3.9.6 Test the High Paw Alarm

  1. Set the bag/mechanical ventilation switch to the
  position.

  2. Select the [Alarm Setup] shortcut key and then [Ventilator
  >>].

  3. Set the Paw low alarm limit to 0 cmH2O and Paw high alarm
  limit to 5 cmH2O.

  4. Make sure that a high Paw alarm occurs.

  5. Set the Paw high alarm limit to 40 cmH2O.

  6. Make sure the high Paw alarm cancels.

• 3-18

  3.9.7 Test the Low Paw Alarm

  1. Set the bag/mechanical ventilation switch to the
  position.

  2. Select the [Alarm Setup] shortcut key and then [Ventilator
  >>].

  3. Set the Paw low alarm limit to 2 cmH2O.

  4. Disconnect the manual bag from the Y piece patient
  connection.

  5. Wait for 20 seconds. View the alarm area and make sure that a
  low Paw alarm occurs.

  6. Connect the manual bag to the manual bag port.

  7. Make sure the low Paw alarm cancels.

  3.10 AGSS Inspection

  3.10.1 Check the Float Install the AGSS. Check if the float
  floats off and exceeds the MIN level. If the float is tacky or
  damaged, re-install the AGSS or replace the float.

  NOTE

  z Do not block the AGSS pressure compensation openings during
  the inspection. If the float fails to float off, the possible
  reasons are:

  1. The float is tacky or stuck to the guide bar. Invert the AGSS
  and check if the float moves up and down freely. If not, clean
  where the float and guide bar meet to remove possible foreign
  substance. Replace the float or guide bar when necessary.

  2. The filter screen inside the top cove may be occluded. Remove
  the filter screen as described below and check if the filter screen
  is occluded.

  a.Turn the top cover counterclockwise to separate it from the
  sight glass.

  Top cover

• 3-19

  b.Take out the nut, fixed plate and filter screen by turn.

  3. The waste gas disposal system is not working or the pump rate
  is less than 60 L/min at which the AGSS works normally. Check if
  the waste gas disposal system reaches the pump rate range of 50-80
  L/min specified by the AGSS.

  3.10.2 Check the Transfer Tube and Active Scavenging Tube
  Disconnect the tubes from other components.

  1. Check the transfer tube and its connectors for damage. If any
  damage is detected, replace the tube (four transfer tubes are
  available in the AGSS accessories for your replacement).

  2. Check:

  1).The receiving hose and its connectors for damage.

  2).If the connections between the receiving hose and its
  connectors are loose.

  3).The nylon pad and seal for damage.

  If any damage or loose connection is detected, replace the
  corresponding component.

  Nut Fixed plate

  Filter screen

  Female 30 mm conical connector

  Transfer tube

  Male 30 mm conical connector.

• 3-20

  3.11 Power Failure Test 1. Connect the anesthesia machine to the
  AC power source. Both AC power LED and

  battery LED should come on. If the AC power LED is not lit,
  check the fuse and power board.

  2. Set the system switch to the position.

  3. Unplug the power cord with the system turned on. The message
  [Battery in Use] is displayed. Meanwhile, the AC power LED is
  extinguished and the battery LED is flashing.

  4. Reconnect the AC power. The prompt message disappears. The AC
  power LED is illuminated. The battery LED stops flashing and stays
  ON.

  Nylon pad Connector of the disposal system

  Pressing plate Receiving hose

  O-ring

  Receiving hose Pressing plate

  Connector of the receiving system

  Battery LED

  AC power LED Operating state LED

• 3-21

  3.12 Electrical Safety Tests

  1. Perform leakage current test by using certified (such as UL,
  CSA or AMAI) test devices. Make sure that the test result is not
  greater than 500 A.

  2. Make sure that the impedance between the protective grounding
  terminal of the power cord and any exposed metal enclosure is less
  than 0.2.

• 3-22

  FOR YOUR NOTES

• 4-1

  4 Maintenance and Calibration

  WARNING

  z When it comes to test and maintain the equipment, make sure
  that the patient is disconnected from the equipment.

  z The equipment may have been used on patients carrying
  infectious diseases. Before testing or maintaining the equipment,
  wear sterile rubber gloves to reduce the risk of being
  infected.

  z When the equipment to be maintained contains blood or other
  secretion, clean, disinfect and sterilize the equipment by strictly
  following the control and safety handling procedures for infectious
  diseases.

  4.1 Equipment Maintenance To ensure the long-term reliability
  and stability of the anesthesia machine, periodical maintenance of
  the equipment and replacement of its parts must be performed by
  authorized service personnel. For details about parts replacement,
  refer to6Repair and Disassembly Periodical parts replacement can be
  carried out every year or every three years. Make records of the
  parts that have been replaced before the periodical
  replacement.

  NOTE

  z These schedules are the minimum frequency based on typical
  usage of 2000 hours per year. You should service the equipment more
  frequently if you use it more than the typical yearly usage.

  z To avoid equipment damage or personal injury, replace the
  parts which need to be replaced periodically even if they are not
  worn or damaged when the due date arrives.

  4.1.1 One-year Replaceable Parts List of one-year service
  package (0621-30-78479):

  SN P/N Description Qty

  1 0611-20-45600 Gas supply inlet filter 3

  2 M6M-010021— Seal for gas supply inlet assembly 3

• 4-2

  SN P/N Description Qty

  3 M6M-010014— Seal for vaporizer manifold 4

  4 M6M-010031— Seal for valve cover 2

  5 M6M-010033— Valve seal 2

  6 M6M-010058— Seal for bag arm 2

  7 M6M-010038— Seal for water collection cup 1

  8 0601-20-78843 Sealing cushion for sodalime canister outlet
  1

  9 0601-20-78842 Sealing component for sodalime canister 1

  10 M6M-010032— Seal for sodalime canister support 1

  11 M6M-010063— Seal for pressure sampling connector 4

  12 M6M-010006— Seal for fresh gas and ACGO 2

  13 M6M-010058— Seal for drive gas and APL discharge 2

  14 0601-20-78848 Seal for bellows housing 1

  15 0601-10-69901 Folding bag 1

  16 0030-10-13077 Seal for axis of bag/mechanical ventilation
  switch 2

  17 0601-20-78840 BYPASS large sealing cushion 1

  4.1.1.1 Parts Replacement

  1. As required, replace the gas supply inlet filter
  (0611-20-45600) and seal for gas supply inlet assembly
  (M6M-010021—) every 12 months. Unscrew the gas supply inlet
  counterclockwise using a wrench to disassemble the gas supply inlet
  assembly as shown below (take O2 supply inlet as an example).

• 4-3

  2. As required, replace the seals (M6M-010014—) where
  vaporizer manifold connectors meet the vaporizers every 12
  months

  Filter0611-20-45600

  SealM6M-010021—

  Seals to be replaced

• 4-4

  3. As required, replace the seal for valve cover (M6M-010031—)
  and valve seal (M6M-010033—) every 12 months.

  4. As required, replace the seal for water collection cup
  (M6M-010038—) every 12 months.

  SealM6M-010038—

  SealM6M-010033—

  SealM6M-010031—

• 4-5

  5. As required, replace the sealing component for sodalime
  canister outlet (0601-20-78843) and sealing component for sodalime
  canister (0601-20-78842) every 12 months.

  6. As required, replace the seal for sodalime canister support
  (M6M-010032—) every 12 months.

  Sealing component for sodalime canister outlet0601-20-78843

  Sealing component for sodalime canister0601-20-78842

  Seal (M6M-010032—)

• 4-6

  7. As required, replace the seal for pressure sampling connector
  (M6M-010063—), seal for fresh gas and ACGO (M6M-010006—), seal
  for drive gas and APL discharge (M6M-010058—) every 12
  months.

  8. As required, replace the seal for bellows housing
  (0601-20-78848) and folding bag (0601-10-69901) every 12
  months.

  SealM6M-010058— SealM6M-010063— SealM6M-010006—

  Folding bag0601-10-69901

  Seal for bellows housing0601-20-78848

• 4-7

  9. As required, replace the seal for axis of bag/mechanical
  ventilation switch (0030-10-13077) every 12 months. For details,
  refer to 6Repair and Disassembly.

  Screws to be unscrewed

  Pull out the pin axis after removing the seal herein

  Pin axis pulled out

  Seal0030-10-13077

• 4-8

  10. As required, replace the BYPASS large sealing cushion
  (0601-20-78840) every 12 months.

  4.1.1.2 Checkout and Test of the Anesthesia Machine

  Perform the following maintenance procedures every 12
  months:

  1. System inspection (refer to 3.1).

  2. Pipeline test (refer to 3.2).

  3. Cylinder test (refer to 3.3).

  4. Flow control system test (refer to 3.4).

  5. Vaporizer back pressure test (refer to 3.5).

  6. O2 flush test (refer to 3.6).

  7. Breathing circuit test (refer to 3.7).

  8. Pressure relief valve test (refer to 3.8).

  9. Alarm test (refer to 3.9).

  10. AGSS inspection (refer to 3.10).

  11. Power failure test (refer to 3.11).

  12. Electrical safety test (refer to 3.12).

  BYPASS large sealing cushion0601-20-78840

• 4-9

  13. Flow sensor calibration (refer to 4.3.2).

  14. O2 sensor calibration (refer to 4.3.7).

  15. Airway pressure gauge zeroing (refer to4.5).

  16. APL valve accuracy adjustment (refer to 4.6).

  17. Low pressure leak test (refer to steps 1 through 8 of 4.Leak
  test of all pipelines on the circuit adapter in 5.3.4.2Leak Test of
  Low-pressure Pneumatic Circuit System).

  4.1.2 Three-year Replaceable Parts List of three-year service
  package (0621-30-78480):

  SN P/N Description Qty

  1 M05-010001-06 Lithium battery Li-ion 11.1V4400mAh LI23S001A
  1

  2 M05-010R03— Cell battery Lithium 3V35mAh D12.5*2.0 1

  4.2 System Test Before the anesthesia machine at the client end
  is maintained, some routine tests are required to check if the
  current status of the anesthesia machine is normal. The following
  table lists the routine tests.

  SN Test item Functional description Test interval

  1

  Check the mechanical ventilation mode

  1. Check if mechanical ventilation is provided normally and if
  an alarm occurs. 2. Check if the preset values of pressure and TV
  are same to the measured values. 3. Check if the pressure measured
  by the pressure sensor is same to that indicated by the airway
  pressure gauge and if the TV measured by the flow sensor is same to
  that indicated by the graduation on the bellows housing. 4. Roughly
  judge if the breathing system has a significant leak by observing
  how much fresh gas is compensatedt and observing if the folding bag
  collapses.

  After each service or at the time of return visit

  2

  Breathing system leak test in mechanical ventilation mode

  1. Check the pneumatic circuit in mechanical ventilation mode
  for leaks, including bellows, drive gas circuit, sodalime canister,
  patient tubes, flow sensors and their connectors. 2. Check the
  control effectiveness of main control board and auxiliary control
  board over PEEP safety v

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[Page 5] Mindray WATO EX-65 III Manufacturer’s Responsibility All information contained in this manual is believed to be correct. Mindray shall not be liable for errors contained herein nor for incidental or consequential damages in connection with the furnishing, …

[Page 6] Mindray WATO EX-65 IV Return Policy In the event that it becomes necessary to return a unit to Mindray, follow the instructions below. 1. Return authorization. Contact the Customer Service Department and obtain a Customer Service Authorization number. Th…

[Page 7] Mindray WATO EX-65 V Preface Manual Purpose This manual contains the instructions necessary to operate the product safely and in accordance with its function and intended use. Observance of this manual is a prerequisite for proper product performance …

[Page 8] Mindray WATO EX-65 VI FOR YOUR NOTES …

[Page 9] Mindray WATO EX-65 1 Contents 1 Safety………………………………………………………………………………………………………………… 1-1 1.1 Safety Information ………………………………………………………….

[Page 10] Mindray WATO EX-65 2 4.4.3 Volume Control Ventilation (VCV)………………………………………………………….. 4-5 4.4.4 Pressure Control Ventilation (PCV) …………………………………………………………. 4-8 4.4.5 Synchronized…

[Page 11] Mindray WATO EX-65 3 6.6.1 Without O2 Sensor ………………………………………………………………………………… 6-5 6.6.2 With O2 Sensor …………………………………………………………………………………….. 6…

[Page 12] Mindray WATO EX-65 4 8.3.7 Calibrate the Sensor ………………………………………………………………………………. 8-7 8.4 Use a Microstream CO2 Module ………………………………………………………………………… 8-…

[Page 13] Mindray WATO EX-65 5 10.9 Set BIS Smoothing Rate…………………………………………………………………………………. 10-7 10.10 Restore Defaults…………………………………………………………………………………….

[Page 14] Mindray WATO EX-65 6 13.2 Install the Breathing Tubes……………………………………………………………………………. 13-19 13.3 Install the Manual Bag ……………………………………………………………………………….

[Page 15] Mindray WATO EX-65 7 14.3.7 Sodalime Canister ……………………………………………………………………………. 14-19 14.3.8 Breathing Tubes and Y Piece……………………………………………………………… 14-20 14.3.9 Fl…

[Page 16] Mindray WATO EX-65 8 FOR YOUR NOTES …

[Page 17] Mindray WATO EX-65 1-1 1 Safety 1.1 Safety Information DANGER z Indicates an imminent hazard that, if not avoided, will result in death or serious injury. WARNING z Indicates a potential hazard or unsafe practice that, if not avoided, could resu…

[Page 18] Mindray WATO EX-65 1-2 1.1.1 Dangers There are no dangers that refer to the product in general. Specific “Danger” statements may be given in the respective sections of this manual. 1.1.2 Warnings WARNING z Before putting the system into operatio…

[Page 19] Mindray WATO EX-65 1-3 WARNING z Use appropriate electrodes and place them according to the instructions provided by the manufacturer. The display restores to normal within 10 seconds after defibrillation. 1.1.3 Cautions CAUTION z To ensure patient sa…

[Page 20] Mindray WATO EX-65 1-4 1.1.4 Notes NOTE z Put the equipment in a location where you can easily see the screen and access the operating controls. z Keep this manual close to the equipment so that it can be obtained conveniently when needed. z The softwa…

[Page 21] Mindray WATO EX-65 1-5 1.2 Equipment Symbols Attention: Consult accompanying documents (this manual) Dangerous voltage Alternating current Fuse Battery Equipotential Operating state Autoclavable Material description Not autoclava…

[Page 22] Mindray WATO EX-65 1-6 VGA connector O 2 supply connector Table top light AGSS outlet Cylinder PEEP outlet Manufacture date Vaporizer Manufacturer Isolation transformer Serial number European community representative APL valv…

[Page 23] Mindray WATO EX-65 2-1 2 The Basics 2.1 System Description 2.1.1 Intended Use The anesthesia machine is intended to provide breathing anesthesia for adult, pediatric and infant patients during surgery. The anesthesia machine must only be operated by …

[Page 24] Mindray WATO EX-65 2-2 2.1.3 Components The anesthesia machine consists of a main unit, vaporizer (five optional anesthetic agents: enflurane, isoflurane, sevoflurane, desflurane and halothane), anesthetic ventilator, electronic flowmeter assembly, breathing…

[Page 25] Mindray WATO EX-65 2-3 2.2 Equipment Appearance 2.2.1 Front View ——Display and control panel …

[Page 26] Mindray WATO EX-65 2-4 1. Brake 2. Pipeline pressure gauge (s) Displays the pipeline pressure or the cylinder pressure after relief. 3. Total flowmeter The medium level of flowtube float indicates the current flow of the mixed gas. 4 Flow control (s) …

[Page 27] Mindray WATO EX-65 2-5 ——Breathing system …

[Page 28] Mindray WATO EX-65 2-6 1. O 2 sensor connector 2. Inspiration connector 3. Expiration connector 4. Inspiratory check valve 5. Expiratory check valve 6. Bellows housing 7. Sample gas return port (to the AGSS) 8. Manual bag port 9. Bag/mechanical ventil…

[Page 29] Mindray WATO EX-65 2-7 2.2.2 Rear View ——Power supply …

[Page 30] Mindray WATO EX-65 2-8 1. Cylinder connector (s) 2. Equipotential stud 3. Fan 4. Mains inlet 5. Network connector 6. CIS 12 V power supply connector 7. Speaker 8. Auxiliary O2 supply 9. ACGO (Auxiliary Common Gas Outlet) switch  Set the switch to …

[Page 31] Mindray WATO EX-65 2-9 ——Anesthesia information system (CIS) …

[Page 32] Mindray WATO EX-65 2-10 This rear view is based on the situation that the anesthesia machine is configured with anesthesia information system (CIS). 1. Display 2. Rail 3. Mounting bracket 4. Keyboard 5. CIS main unit A. Reset key : Press to restar…

[Page 33] Mindray WATO EX-65 2-11 WARNING z Connect to the AC mains in compliance with B.3 Power Requirements. Failure to do so may cause damage to the equipment or affect its normal operation. z Make sure that the jacket on the electrical outlet is already fixed to a…

[Page 34] Mindray WATO EX-65 2-12 2.3 Batteries NOTE z Use batteries at least once every month to extend their life. Charge the batteries before their capacities are worn out. z Inspect and replace batteries regularly. Battery life depends on how frequent and ho…

[Page 35] Mindray WATO EX-65 3-1 3 System Controls and Basic Settings 3.1 Display Control 1. Alarm lamp  High level alarms: the lamp quickly flashes red.  Medium level alarms: the lamp slowly flashes yellow.  Low level alarms: the lamp turns yell…

[Page 36] Mindray WATO EX-65 3-2 4. MV&TVe alarm key  In case of manual ventilation mode: Push the key to switch off MV and TVe overrange alarms and apnea alarm. Push the key again to switch on MV and TVe overrange alarms and apnea alarm.  In case of mechani…

[Page 37] Mindray WATO EX-65 3-3 3.2 Display Screen This anesthesia machine adopts a high-resolution color TFT LCD to display various parameters and graphs, such as ventilation parameters and pressure/flow/volume waveforms. Depending on how your anesthesia machine is …

[Page 38] Mindray WATO EX-65 3-4 4. Physiological alarm area Displays physiological alarm messages. 5. Apnea alarm off icon area Displays apnea alarm off icon when apnea alarm is switched off in non-mechanical ventilation mode. 6. Alarm silence icon area Displ…

[Page 39] Mindray WATO EX-65 3-5 Displays information about system operating state. 18 Parameter&graph area Displays the parameters, waveforms, spirometry loops, or electronic flowmeter graphs which the anesthesia ventilator, gas module or BIS module monitors. Dif…

[Page 40] Mindray WATO EX-65 3-6 3.3.3 Set System Time 1. Select the [Maintenance] shortcut key → [User Maintenance >>] → [Set System Time >>]. 2. Set [Date] and [Time]. 3. Select [Date Format] and toggle between [YYYY-MM-DD], [MM-DD-YYYY] and [DD-…

[Page 41] Mindray WATO EX-65 3-7 2. Select [Ok] from the pop-up menu. After [Ok] is selected, the following settings restore their default values:  User screen  Ventilator parameters  Alarm limits of ventilator-related parameters  O2 monitoring source …

[Page 42] Mindray WATO EX-65 3-8 FOR YOUR NOTES …

[Page 43] Mindray WATO EX-65 4-1 4 Operations and Ventilation Setup WARNING z Before using this anesthesia machine on the patient, make sure that the system is correctly connected and in good condition, and that all the tests described in 6 Preoperative Test are alrea…

[Page 44] Mindray WATO EX-65 4-2 4.3 Input Fresh Gas 4.3.1 Set O 2, N 2 O and Air Inputs 1. Connect the gas supplies correctly and ensure adequate gas pressure. 2. You can control the O 2, N 2 O and Air flows in the fresh gas through the O 2, N 2 O and Air flow …

[Page 45] Mindray WATO EX-65 4-3 4.3.2 Set Anesthetic Agent NOTE z You do not need to perform this operation if inspiratory anesthetic agent is not used. z This anesthesia machine can be mounted with vaporizers corresponding with halothane, enflurane, isoflurane, …

[Page 46] Mindray WATO EX-65 4-4 4.4 Set Ventilation Mode 4.4.1 Set Manual Ventilation Mode 1. Turn the APL valve control to adjust the pressure in the breathing system within the appropriate range. 2. Set the bag/mechanical ventilation switch to the position. The…

[Page 47] Mindray WATO EX-65 4-5 NOTE z When using the anesthesia machine on the patient, make sure that manual ventilation mode is available. 4.4.2 Make Settings before Starting Mechanical Ventilation Mode 1. Make sure that the system is Standby. 2. Set the a…

[Page 48] Mindray WATO EX-65 4-6 To ensure the set tidal volume gas delivery, the ventilator adjusts gas flow based on the measured inspiratory volume, dynamically compensates for the loss of tidal volume arising from breathing system compliance and system leakage and el…

[Page 49] Mindray WATO EX-65 4-7 NOTE z When it is necessary to switch over to VCV mode, confirm the setting of TV first. Otherwise, the system works in the previous ventilation mode. If the setting of TV is not confirmed for 10 s, the screen returns to the previous mo…

[Page 50] Mindray WATO EX-65 4-8 NOTE z If the parameter value is adjusted outside of the range, the system prompt message area displays [Parameter Settings Outside the Safety Range]. z Confirm the adjustment of one parameter before adjusting another parameter. If yo…

[Page 51] Mindray WATO EX-65 4-9 4.4.4.2 Waveforms The following figures show the Paw waveform and flow waveform in the PCV mode. Generally, in the PCV mode, the Paw waveform rises sharply during inspiration and stays at the plateau for a relatively long time wi…

[Page 52] Mindray WATO EX-65 4-10 4.4.4.4 Parameter Setup Shortcut Keys Area in PCV Mode When selection of PCV mode is confirmed, the parameter setup shortcut keys area at the bottom of the screen is automatically switched over to the parameter setup area in this mode. …

[Page 53] Mindray WATO EX-65 4-11 4.4.4.6 Parameter Range and Default Value in PCV Mode Parameter Range Step Default Pinsp 5 to 60 cmH2O 1 cmH2O 15 cmH2O Rate 4 to 100 BPM 1 BPM 12 BPM I:E 4:1 to 1:8 0.5 1:2 Plimit 10 to 100 cmH2O 1 cmH2O 30 cmH2O …

[Page 54] Mindray WATO EX-65 4-12 4.4.5.2 Waveforms  SIMV-VC: The following figures show the Paw waveform and flow waveform in the SIMV-VC mode. 【SIMV-VC】+【PSV】  SIMV-PC: The following figures show the Paw waveform and flow waveform in the SIMV-PC mo…

[Page 55] Mindray WATO EX-65 4-13 4.4.5.3 Start SIMV Mode You can select [SIMV-VC] or [SIMV-PC] as required. To start SIMV-VC, do as follows: 1. Select the [Vent Mode] shortcut key to open the [Vent Mode Setup] menu. 2. Select [SIMV-VC >>] in the [Vent Mode Setup] …

[Page 56] Mindray WATO EX-65 4-14 4.4.5.4 Parameter Setup Shortcut Keys Area in SIMV Mode When selection of SIMV mode is confirmed, the parameter setup shortcut keys area at the bottom of the screen is automatically switched over to the parameter setup area in this mode….

[Page 57] Mindray WATO EX-65 4-15 NOTE z When SIMV mode, either SIMV-VC or SIMV-PC, is selected, pressure support ventilation (PSV) mode is used for triggering outside of the trigger window. Therefore, you also need to set the parameters in PSV mode appropriately, [Ps…

[Page 58] Mindray WATO EX-65 4-16  [Trigger Level] 1. In the SIMV-VC mode, select the [Vent Mode] shortcut key → [SIMV –VC >>] → [Trigger Level]. Or, in the SIMV-PC mode, select the [Vent Mode] shortcut key → [SIMV-PC >>] → [Trigger Level]….

[Page 59] Mindray WATO EX-65 4-17 4.4.5.6 Parameter Range and Default Value in SIMV Mode Parameter Range Step Default SIMV mode TV TV 20 to 1500 ml 20 to 100 ml: 5 ml 100 to 300 ml: 10 ml 300 to 1500 ml: 25 ml SIMV-VC Pinsp 5 to 60 cmH2O 1 cmH2O 15 cmH2O …

[Page 60] Mindray WATO EX-65 4-18 When PSV mode is applied alone, the PCV backup mode is available. If within the preset time (Backup Mode Active), no spontaneous breathing occurs or spontaneous breathing is not strong enough to reach Trigger Level, the PCV backup mode is …

[Page 61] Mindray WATO EX-65 4-19 4.4.6.4 Parameter Setup Shortcut Keys Area in PSV Mode When selection of PSV mode is confirmed, the parameter setup shortcut keys area at the bottom of the screen is automatically switched over to the parameter setup area in this mode. …

[Page 62] Mindray WATO EX-65 4-20 In PSV mode, you also need to set:  [Trigger Level] 1. Select the [Vent Mode] shortcut key → [PSV >>] → [Trigger Level]. 2. Select [Pressure] or [Flow] for trigger type. 3. Turn the control knob to set [Trigger Level…

[Page 63] Mindray WATO EX-65 4-21 4.4.6.6 Parameter Range and Default Value in PSV Mode Parameter Range Step Default Ventilation mode Pinsp 5 to 60 cmH2O 1 cmH2O 15 cmH2O Rate 4 to 60 BPM 1 BPM 10 BPM I:E 4 to 100 BPM 1 BPM 12 BPM PCV (backup ventila…

[Page 64] Mindray WATO EX-65 4-22 4.6 Set the Timer 4.6.1 Start the Timer To start the timer, select the timer setup shortcut key and select [Start]. NOTE z During timing, if you select [Start] from the [Timer Setup] menu again, timing continues normally instead of…

[Page 65] Mindray WATO EX-65 4-23 4.7 Stop Mechanical Ventilation To stop mechanical ventilation, do as follows: 1. Make sure that the breathing system is set up and the APL valve is set properly before stopping mechanical ventilation. The APL valve adjusts the br…

[Page 66] Mindray WATO EX-65 4-24 FOR YOUR NOTES …

[Page 67] Mindray WATO EX-65 5-1 5 User Interface and Parameter Monitoring 5.1 Screen Layout Depending on module and functional configurations, user screens differ in parameter&graph area and parameter setup shortcut keys area. User screens fall into four categ…

[Page 68] Mindray WATO EX-65 5-2 5.1.1 Standby Screen When the anesthesia machine is not in use for a short period of time, entering standby status can help save power and extend service life of the machine. The anesthesia machine enters standby status automatically…

[Page 69] Mindray WATO EX-65 5-3 5.1.2 Normal Screen On the normal screen, parameter/graph area and waveform area are divided. Parameter/graph area Waveform area The structure of these two areas varies depending on the configurations. 5.1.2.1 Par…

[Page 70] Mindray WATO EX-65 5-4 5.1.3 Special Screen Special screen includes big numerics screen and measured values screen. The screen layout is: Parameter&graph area Big numerics/measured values sharing area 5.1.3.1 Parameter&graph A…

[Page 71] Mindray WATO EX-65 5-5  When screen layout is set to measured values screen, this area displays Paw waveform and ventilation parameters as shown below. 5.2 Screen Setup To set the desired screen style, 1. Select the [Screens] shortcut key and se…

[Page 72] Mindray WATO EX-65 5-6 5.3.1.2 Set FiO2 Alarm Limits 1. Select the [Alarm Setup] shortcut key and select [Ventilator >>]. 2. Set FiO2 high and low alarm limits in the [Ventilator Alarm Limits] menu. When the measured FiO2 exceeds the alarm limit, an ala…

[Page 73] Mindray WATO EX-65 5-7 5.3.1.4 Display O2 Waveform If the AG module which your anesthesia machine is configured with incorporates an O2 module, an O2 waveform is displayed as shown below. 5.3.2 Anesthetic Agent (AA) Concentration Monitoring If your anes…

[Page 74] Mindray WATO EX-65 5-8 NOTE z As required by the relevant international rules and regulations, anesthetic agent concentration monitoring needs to be performed when the anesthesia machine is used on the patient. If your anesthesia machine is not configured wit…

[Page 75] Mindray WATO EX-65 5-9 5.3.3.3 Other Settings For details, refer to 8CO2 Monitoring and 9AG and O2 Concentration Monitoring. NOTE z As required by the relevant international rules and regulations, CO2 concentration monitoring needs to be performed when t…

[Page 76] Mindray WATO EX-65 5-10 4. Select to exit the current menu. 5. Set waveform scale. The Paw waveform scale is automatically adjusted based on the set Plimit. You can set the Paw waveform scale appropriately by setting Plimit. 5.3.4.4 Set Paw Unit 1. Select…

[Page 77] Mindray WATO EX-65 5-11 If your anesthesia machine is not configured with CO2 or AG module, tidal volume and breath rate related parameters are displayed as shown below.  [MV]: Minute ventilation  [TVe]: Expired tidal volume  [Rate]: Breath rat…

[Page 78] Mindray WATO EX-65 5-12 5.3.5.4 Set MV and TVe Alarm Limits 1. Select the [Alarm Setup] shortcut key and select [Ventilator >>]. 2. Set MV high and low alarm limits in the [Ventilator Alarm Limits] menu. 3. Set TVe high and low alarm limits as requir…

[Page 79] Mindray WATO EX-65 5-13 5.3.7 Volume Monitoring 5.3.7.1 Display Volume Waveform 5.3.7.2 Set Volume Waveform 1. Select the waveform area to access the waveform setup menu. 2. Select [Waveform] and select [Volume]. 3. Select [Sweep] and toggle between [6….

[Page 80] Mindray WATO EX-65 5-14 5.3.9 BIS Monitoring 5.3.9.1 Display BIS Parameters If your anesthesia machine is configured with BIS module, on the normal screen, BIS related parameters are displayed as shown below.  [BIS]: Bispectral index  [SQI]: Signal…

[Page 81] Mindray WATO EX-65 5-15 5.3.9.2 Display BIS EEG Waveform If your anesthesia machine is configured with BIS module, BIS EEG and BIS Trend waveforms are displayed as shown below. BIS EEG waveform: BIS Trend waveform: 5.3.9.3 Set BIS EEG Waveform 1. …

[Page 82] Mindray WATO EX-65 5-16 5.4 Display Electronic Flowmeter Gas flow can be displayed either in a standard-resolution mode or high-resolution mode. These two resolution modes vary in scale and accuracy. Switchover between the standard-resolution mode and the hi…

[Page 83] Mindray WATO EX-65 6-1 6 Preoperative Test 6.1 Preoperative Test Schedules 6.1.1 Test Intervals Perform the preoperative tests listed below at these events: 1. Before each patient. 2. When required after a maintenance or service procedure. The following…

[Page 84] Mindray WATO EX-65 6-2 6.2 Inspect the System NOTE z Make sure that the breathing system is correctly connected and not damaged. z The top shelf weight limit is 30 kg. Make sure that: 1. The anesthesia machine is undamaged. 2. All components are cor…

[Page 85] Mindray WATO EX-65 6-3 5. Make sure that the AC mains indicator is illuminated and the battery indicator stops flashing and continues illuminated. Meanwhile, the prompt message [Battery in Use] disappears. 6. Set the system switch to the position. 6.4 P…

[Page 86] Mindray WATO EX-65 6-4 6.4.2 N2O Pipeline Test Connect an O 2 supply before doing the N 2 O pipeline test. For details, refer to 6.4.1O2 Pipeline Test NOTE z When doing the N 2 O pipeline test, connect O 2 supply first to enable N 2 O flow control. …

[Page 87] Mindray WATO EX-65 6-5 6.5.2 O2 Cylinder High Pressure Leak Test 1. Set the system switch to the position and stop O 2 pipeline supply. 2. Turn off the O 2 flowmeter. 3. Open the O 2 cylinder valve. 4. Record the current cylinder pressure. 5. Close…

[Page 88] Mindray WATO EX-65 6-6 NOTE z After doing the cylinder tests, close all cylinder valves if cylinder supplies are not used. z Turn the flow controls slowly. Do not turn further when the flow indicated on the flowmeter is outside of the range to avoid damaging …

[Page 89] Mindray WATO EX-65 6-7 NOTE z When O 2 supply is disconnected, alarms for [O2 Supply Failure] and [Drive Gas Pressure Low] occur as O 2 pressure decreases. 9. Set the system switch to the position. 6.6.2 With O2 Sensor Do as described in 6.9.2 Test…

[Page 90] Mindray WATO EX-65 6-8  Make sure that the N 2 O flow decreases. The measured O 2 concentration must be ≥21% through the full range. 8. Disconnect the O 2 pipeline supply or close the O 2 cylinder valve. 9. Make sure that:  N 2 O and O 2 flows s…

[Page 91] Mindray WATO EX-65 6-9 NOTE z Do not perform test on the vaporizer when the concentration control is between “OFF” and the first graduation above “0” (zero) as the amount of anesthetic drug outputted is very small within this range. 6.8 Breathing…

[Page 92] Mindray WATO EX-65 6-10 6.8.2 Breathing System Leak Test in Mechanical Ventilation Status NOTE z Breathing system leak test must be performed when the system is in standby status. z Before doing the breathing system leak test, make sure that the breathing …

[Page 93] Mindray WATO EX-65 6-11 6.8.3 Breathing System Leak Test in Manual Ventilation Status 1. Make sure that the system is Standby. If not, press the key and select [Ok] from the pop-up menu to enter standby status. 2. Set the bag/mechanical ventilation switch…

[Page 94] Mindray WATO EX-65 6-12 6.9 Alarm Tests The anesthesia machine performs a self test after started. The alarm lamp flashes yellow and red once in turn and then a beep is given. Then the display shows the start-up screen and enters the standby screen after 30 se…

[Page 95] Mindray WATO EX-65 6-13 6.9.2 Test the O2 Concentration Monitoring and Alarms NOTE z This test is not required if no O 2 sensor is configured. 1. Set the bag/mechanical ventilation switch to the bag position. 2. Remove the O 2 sensor. After two to …

[Page 96] Mindray WATO EX-65 6-14 6.9.4 Test the Apnea Alarm 1. Connect the manual bag to the manual bag port 2. Set the bag/mechanical ventilation switch to the bag position. 3. Turn the APL valve control to set the APL valve to the minimum position. 4. Infl…

[Page 97] Mindray WATO EX-65 6-15 6.9.7 Test the Low Paw Alarm 1. Set the bag/mechanical ventilation switch to the mechanical position. 2. Select the [Alarm Setup] shortcut key and then [Ventilator >>]. 3. Set the Paw low alarm limit to 2 cmH 2 O. 4. Disconn…

[Page 98] Mindray WATO EX-65 6-16 WARNING z Before connecting a patient, flush the anesthesia machine with 5 L/min of O 2 for at least one minute. This removes unwanted mixtures and by-products from the system. 6.11 Inspect the AGSS Assemble the AGSS as descri…

[Page 99] Mindray WATO EX-65 7-1 7 User Maintenance 7.1 Repair Policy WARNING z Only use lubricants approved for anesthesia or O 2 equipment. z Do not use lubricants that contain oil or grease. They burn or explode in high O 2 concentrations. z Obey infectio…

[Page 100] Mindray WATO EX-65 7-2 7.2 Maintenance Schedule NOTE z These schedules are the minimum frequency based on typical usage of 2000 hours per year. You should service the equipment more frequently if you use it more than the typical yearly usage. Minimu…